Baseline pricing for Arduino related items

Note: These prices were manually determined by searching eBay. All efforts have been made to be accurate. This pricing info comes with no warranty or promise. The links (prices) should take you to an eBay (or Amazon in the Amazon column) item that you can buy (not bid on).

Note: Amazon prices are the least expensive I could find that qualified for Prime shipping (or at least free shipping).

Note: up and down now show up in some price categories. These indicate price change since last update.

Note: Items with * have updated prices as of October 19, 2017

Category Description Amazon
Price eBay
Price Image
Arduino UNO (socketed) $8.99
down $3.10 $7.96
up $2.09

Arduino UNO (surface mount) $4.76
up $1.41 *

Arduino Mega $9.68
down $8.62 $9.52
up $2.00 *

Arduino Nano $2.31
down $0.14 *

Arduino Pro Mini $2.18
up $0.59 *

2WD Motor Smart Robot Car Chassis Kit $8.49
down $0.59

2WD Motor Smart Robot Car Chassis Kit Speed Encoder Battery Box $11.99 $8.49
down $0.59

4WD Motor Smart Robot Car Chassis Kit Speed Encoder Battery Box $23.80 $14.16
down $7.74

2WD Complete kit $23.18
down $1.85 *

170 Tie-points: Mini Nickel Plating Breadboard $3.95 $0.79
up $0.06 *

Solderless Breadboard 400 Tie Points $5.18
down $0.20 $1.29
down $0.30

Solderless Breadboard MB-102 830 Tie Points $7.00 $1.94
up $0.10 *

MB-102 Breadboard Power Supply Module $5.99 $0.79
up $0.06 *

433Mhz RF transmitter receiver link kit N/A
prime
eligible $0.79
up $0.06 *

USB To RS232 TTL $5.58 $1.03
up $0.30 *

NRF24L01+ 2.4GHz Antenna Wireless Transceiver Module $5.98 $0.99
no change

MAX485 Module/RS485 Module/TTL to RS-485 Module Converter Board $3.89
down $4.05 $0.73
Same

15x Single Row 40 Way / Pin 2.54mm Pitch Pin Headers N/A
prime
eligible $1.03
up $0.08 *

4x4 Matrix 16 Keypad Keyboard Module N/A
prime
eligible $0.79
up $0.06 *

16 Key 4 x 4 Matrix Array Keyboard Membrane Switch Keypad $2.99
down $0.51 $0.99

RTC DS1302 Real Time Clock Module $8.99 $0.96
up $0.23 *

RTC I2C DS1307 AT24C32 Real Time Clock Module $5.99
down $0.50 $0.96
up $0.23 *

RTC DS3231 Real Time Clock Module $1.17
up $0.18 *

3 Bits 12-Pin 0.36 Inch LED Display 7 Segment $0.79
up $0.06 *

0.56 inch Red 4 Digit 5461 LED Display 7 seg Segment Common Anode $4.21
down $1.01 $1.16
up $0.27

100pcs LED F5 5MM RED COLOR RED LIGHT Super Bright Bulb Lamp N/A
prime
eligible $1.11
down $0.37 *

50x 5mm Round LED Light Water Clear Straw Hat 2 pin N/A
prime
eligible Red $1.49
Green $1.49
White $1.49
Yellow $1.49
Blue $1.49
Purple $2.29

100pcs 5mm Red Green Blue Yellow White Ultra Bright LED Light Bulb Lamp 20000mcd N/A
prime
eligible $2.31
down $0.55 *

100 PCS 5mm 4 PINS Water Clear RGB LEDs N/A
prime
eligible $5.69
down $0.69

MAX7219 Dot Matrix Display Module Cascade Control Display Module DIY Kit $8.50 $1.48
up $0.13 *

Passive Buzzer Module N/A
prime
eligible $0.79
up $0.06 *

IIC/I2C/TWI/SPI Serial Interface Board Module Port 1602LCD Display $5.08 $0.79
up $0.06 *

Infrared Transmitter Module $5.33
down $0.73 $1.00
no change *

TEA5767 Programmable Low-power FM Stereo Radio Module A864 N/A
prime
eligible $1.68
up $0.65 *

KY-001 DS18B20 Temperature Measurement Sensor Module N/A
prime
eligible $2.01
no change *

KY-002 Vibration Switch Module Vibration Sensor N/A
prime
eligible $0.99
down $0.03 *

KY-003 Hall Magnetic Sensor Module N/A
prime
eligible $0.99
no change *

KY-004 Mini Key Switch Module N/A
prime
eligible $0.99
no change *

KY-005 Infrared Transmitter Module N/A
prime
eligible $1.03
Same

KY-006 Passive Buzzer Module N/A
prime
eligible $0.99
no change *

KY-008 Laser Head Transmitter Sensor Module $6.99 $0.79
up $0.06 *

KY-009 RGB 3 Color Full Color LED DIP Module N/A
prime
eligible $0.79
up $0.06 *

KY-010 Photo Interrupter Module N/A
prime
eligible $1.43
up $0.12 *

KY-011 5mm Red and Green LED Common Cathode Module N/A
prime
eligible $1.99
down $1.49

KY-012 Active Buzzer Module N/A
prime
eligible $0.99
no change *

KY-013 Black Analog Temperature Sensor Module -55 - +125 N/A
prime
eligible $0.79
up $0.06 *

KY-015 DHT11 Digital Temperature and Humidity Sensor Module N/A
prime
eligible $1.41
down $0.07 *

KY-016 RGB 3 Color Full Color LED Module N/A
prime
eligible $0.79
up $0.06 *

KY-017 Mini Mercury Type Tilt Sensor Module N/A
prime
eligible $1.99
no change *

KY-018 photoresistor module N/A
prime
eligible $0.99
no change *

KY-019 5V Relay Module N/A
prime
eligible $1.34
down $0.08 *

KY-020 Tilt Switch Module N/A
prime
eligible $0.79
up $0.06 *

KY-021 MINI Reed Switch Module N/A
prime
eligible $0.99
no change *

KY-022 Infrared Remote Control Module N/A
prime
eligible $0.99
dow $0.05 *

KY-023 Game Joystick Axis Sensor Module Controller Shield N/A
prime
eligible $0.99
no change *

KY-024 Linear Hall Magnetic Module N/A
prime
eligible $0.99
down $1.85 *

KY-025 Reed Module Magnetic Reed Module N/A
prime
eligible $1.63
down $1.95 *

KY-026 Flame Module N/A
prime
eligible $0.99
down $0.50 *

KY-027 Magic light cup module N/A
prime
eligible $2.42
down $1.46 *

KY-028 Digital Temperature Module N/A
prime
eligible $1.76
up $0.15 *

KY-029 3mm Red and Green LED Common Cathode Module N/A
prime
eligible $2.85
down $0.15

KY-031 Knock Sensor Module N/A
prime
eligible $1.05
up $0.32 *

KY-032 Obstacle avoidance sensor module N/A
prime
eligible N/A

KY-033 Tracking Sensor Infrared Obstacle Avoidance sensor N/A
prime
eligible $0.99
no change *

KY-034 7 Color Flashing LED Module N/A
prime
eligible $1.69
down $1.95 *

KY-035 Analog Hall Magnetic Sensor Module N/A
prime
eligible $1.65
down $1.95

KY-036 Touch Module N/A
prime
eligible $1.93
no change *

KY-037 High Sensitivity Sound Detection Module N/A
prime
eligible $0.99
up $0.17 *

KY-039 5V Heartbeat Sensor Senser Detector Module N/A
prime
eligible $0.99
no change *

KY-040 Rotary Encoder Module $7.99 $0.79
up $0.06

5x7 - 12x8 single/double sided PCB N/A
prime
eligible $0.99 - $2.39

2pcs 5x7 cm PCB N/A
prime
eligible $0.99

7x9 cm PCB N/A
prime
eligible $0.99

9x15 cm PCB N/A
prime
eligible $0.99

2 x 9V DC Battery Power Cable Plug Clip barrel jack connector $6.99 for 5 $0.79
down $0.67 *

Battery Box holder ON/OFF Switch for 4 AA Batteries $4.39 $1.18
up $0.19

5V Mini USB 1A Lithium Battery Charging Lipo Charger Module $6.99 $0.99
down $0.48 *

1-Channel H/L Level Triger Optocoupler Relay Module $8.60 $0.96
up $0.15 *

2-Channel H/L Level Triger Optocoupler Relay Module $1.62
up $0.25 *

4-Channel H/L Level Triger Optocoupler Relay Module $2.82
up $0.82 *

8-Channel H/L Level Triger Optocoupler Relay Module $5.33
down $0.50 *

16-Channel H/L Level Triger Optocoupler Relay Module $9.52
down $5.91 *

400 pcs 1/4W 1% 30 Metal Film Resistor Assortment N/A
prime
eligible $2.29

10pcs 3362P-102 3362 P 1K ohm High Precision Variable Resistor Potentiometer N/A
prime
eligible $1.79

10pcs 10K ohm 3362P Trim Pot Trimmer Potentiometer 3362 P103 N/A
prime
eligible $1.79

10pcs 100K ohm 3362P Trim Pot Trimmer Potentiometer 3362 P103 N/A
prime
eligible $1.79

10pcs B1K 3 pin Short Handle 15mm Linear Taper Rotary Single Potentiometer Panel N/A
prime
eligible $4.35

10pcs B10K 3 pin Short Handle 15mm Linear Taper Rotary Single Potentiometer Panel N/A
prime
eligible $2.35

10pcs B100K 3 pin Short Handle 15mm Linear Taper Rotary Single Potentiometer Panel N/A
prime
eligible $2.23

50PCS Photoresistor GL5506 LDR Photo Resistors $1.99
no change *

20PCS Photoresistor GL5516 LDR Photo Resistors $0.79
up $0.06 *

20PCS Photoresistor GL5528 LDR Photo Resistors $5.30
down $0.90 $0.79
down $0.20 *

Reed sensor module N/A
prime
eligible $0.99
no change *

Electronic Brick Sound Sensor Microphone N/A
prime
eligible $1.09
no change *

Ultrasonic Module HC-SR04 Distance Measuring Transducer $5.20 $0.89
down $0.10

Tilt Switch Module $5.83
down $0.25 $0.96
down $0.03 *

Analog Temperature Sensor Module N/A
prime
eligible $1.01
up $0.02 *

Vibration Switch Module SW-18015P Vibration Sensor $0.99
down $0.07 *

Knock Sensor Module $0.79
down $0.24 *

Soil Hygrometer Humidity Detection Module Soil Moisture Sensor $0.75
up $0.03 *

Rain Water Level Sensor Module Depth Detection $0.99
up $0.06 *

LM393 IR Infrared Flame Sensor Module Board Wavelength 760nm-1100nm $0.99
no change *

DHT11 Digital Temperature Humidity Sensor Moudle Probe $0.99
up $0.12 *

DHT22 Digital Temperature Humidity Sensor Moudle Probe $4.19 $2.87
down $0.02 *

2PCS Digital 38KHz Infrared IR Sensor Transmitter Kit $2.11
down $0.71 *

3.7g Mini Servo $2.19
sown $0.14)

Micro 4.3g Servo $2.29
down $0.19

SG90 Micro 9g Servo $1.86
up $0.10

SG90 Micro 9g Servo with horns $1.86
down $0.11

S3003 Standard Servo $3.95
up $0.40

I / O Expansion Sensor Shield For Arduino Nano/Mini $1.40
down $1.35

MEGA Prototype Shield V3 Mini Bread Board $2.37
down $1.52

Sensor Shield V4 Digital Analog Module for UNO $1.80
down $0.91

UNO Sensor Shield V5 $1.65
down $0.84

UNO Prototype Shield With Mini Breadboard $1.99
up $2.44

UNO Prototype Shield DIY KIT $2.15
down $1.83

UNO Data Logger Module Logging Recorder Shield V1.0 $2.21
down $2.41

UNO 1602 LCD Board Blue Backlight Keypad Shield $3.58
down $0.18

W5100 Ethernet Shield For Arduino $9.99 $5.32
down $2.34

Stepper Motor Driver Board ULN2003 5V 4-phase 5 line MA $0.73
down $0.26

ULN2003 Stepper Motor Driver Board $0.92
down $0.07

Gear Stepper Motor DC 5V 4 Reduction $1.22
down $0.38

ULN2003 Stepper Motor Driver Board with motor $1.57
down $0.67

H-bridge Stepper Motor Dual DC Motor Driver Controller Board HG7881 $1.41
down $0.08

Dual H Bridge DC Stepper Motor Drive Controller Board Module L298N $8.48 $1.81
down $0.54

5pcs 6x8.5mm Micro Miniature Stepper Motors With 2.8mm Black Gear $1.47
down $0.02

AT24C256 Serial EEPROM Module I2C EEPROM Data Storage Module $0.95
down $0.04

SD Card Module Slot Socket Reader $0.73
down $0.26

100pcs 6x6x5mm 4pin Tactile Push Button Switch Momentary Tact DIP Through-Hole $0.99
same

Black Color Rocker Switch 50V 6A 2 PIN $1.49
up $0.01

140pcs U Shape Solderless Breadboard Jumper Cable Wire Kits $2.12
down $0.77

65pcs Male to Male Solderless Flexible Breadboard Jumper Cable Wires $1.24
down $0.25

40 1p-1p Pin Connector Dupont Wire 20cm Cable Line (female to female) $0.95
down $0.04

40 1p-1s Pin Connector Dupont Wire 20cm Cable Line (male to female) $0.97
down $0.02

40 1p-1s Pin Connector Dupont Wire 20cm Cable Line (male to male) $0.99
same

Description	Amazon Price	eBay Price
Arduino UNO (socketed)	$8.99 down $3.10	$7.96 up $2.09
Arduino UNO (surface mount)		$4.76 up $1.41 *
Arduino Mega	$9.68 down $8.62	$9.52 up $2.00 *
Arduino Nano		$2.31 down $0.14 *
Arduino Pro Mini		$2.18 up $0.59 *
2WD Motor Smart Robot Car Chassis Kit		$8.49 down $0.59
2WD Motor Smart Robot Car Chassis Kit Speed Encoder Battery Box	$11.99	$8.49 down $0.59
4WD Motor Smart Robot Car Chassis Kit Speed Encoder Battery Box	$23.80	$14.16 down $7.74
2WD Complete kit		$23.18 down $1.85 *
170 Tie-points: Mini Nickel Plating Breadboard	$3.95	$0.79 up $0.06 *
Solderless Breadboard 400 Tie Points	$5.18 down $0.20	$1.29 down $0.30
Solderless Breadboard MB-102 830 Tie Points	$7.00	$1.94 up $0.10 *
MB-102 Breadboard Power Supply Module	$5.99	$0.79 up $0.06 *
433Mhz RF transmitter receiver link kit	N/A prime eligible	$0.79 up $0.06 *
USB To RS232 TTL	$5.58	$1.03 up $0.30 *
NRF24L01+ 2.4GHz Antenna Wireless Transceiver Module	$5.98	$0.99 no change
MAX485 Module/RS485 Module/TTL to RS-485 Module Converter Board	$3.89 down $4.05	$0.73 Same
15x Single Row 40 Way / Pin 2.54mm Pitch Pin Headers	N/A prime eligible	$1.03 up $0.08 *
4x4 Matrix 16 Keypad Keyboard Module	N/A prime eligible	$0.79 up $0.06 *
16 Key 4 x 4 Matrix Array Keyboard Membrane Switch Keypad	$2.99 down $0.51	$0.99
RTC DS1302 Real Time Clock Module	$8.99	$0.96 up $0.23 *
RTC I2C DS1307 AT24C32 Real Time Clock Module	$5.99 down $0.50	$0.96 up $0.23 *
RTC DS3231 Real Time Clock Module		$1.17 up $0.18 *
3 Bits 12-Pin 0.36 Inch LED Display 7 Segment		$0.79 up $0.06 *
0.56 inch Red 4 Digit 5461 LED Display 7 seg Segment Common Anode	$4.21 down $1.01	$1.16 up $0.27
100pcs LED F5 5MM RED COLOR RED LIGHT Super Bright Bulb Lamp	N/A prime eligible	$1.11 down $0.37 *
50x 5mm Round LED Light Water Clear Straw Hat 2 pin	N/A prime eligible	Red $1.49 Green $1.49 White $1.49 Yellow $1.49 Blue $1.49 Purple $2.29
100pcs 5mm Red Green Blue Yellow White Ultra Bright LED Light Bulb Lamp 20000mcd	N/A prime eligible	$2.31 down $0.55 *
100 PCS 5mm 4 PINS Water Clear RGB LEDs	N/A prime eligible	$5.69 down $0.69
MAX7219 Dot Matrix Display Module Cascade Control Display Module DIY Kit	$8.50	$1.48 up $0.13 *
Passive Buzzer Module	N/A prime eligible	$0.79 up $0.06 *
IIC/I2C/TWI/SPI Serial Interface Board Module Port 1602LCD Display	$5.08	$0.79 up $0.06 *
Infrared Transmitter Module	$5.33 down $0.73	$1.00 no change *
TEA5767 Programmable Low-power FM Stereo Radio Module A864	N/A prime eligible	$1.68 up $0.65 *
KY-001 DS18B20 Temperature Measurement Sensor Module	N/A prime eligible	$2.01 no change *
KY-002 Vibration Switch Module Vibration Sensor	N/A prime eligible	$0.99 down $0.03 *
KY-003 Hall Magnetic Sensor Module	N/A prime eligible	$0.99 no change *
KY-004 Mini Key Switch Module	N/A prime eligible	$0.99 no change *
KY-005 Infrared Transmitter Module	N/A prime eligible	$1.03 Same
KY-006 Passive Buzzer Module	N/A prime eligible	$0.99 no change *
KY-008 Laser Head Transmitter Sensor Module	$6.99	$0.79 up $0.06 *
KY-009 RGB 3 Color Full Color LED DIP Module	N/A prime eligible	$0.79 up $0.06 *
KY-010 Photo Interrupter Module	N/A prime eligible	$1.43 up $0.12 *
KY-011 5mm Red and Green LED Common Cathode Module	N/A prime eligible	$1.99 down $1.49
KY-012 Active Buzzer Module	N/A prime eligible	$0.99 no change *
KY-013 Black Analog Temperature Sensor Module -55 - +125	N/A prime eligible	$0.79 up $0.06 *
KY-015 DHT11 Digital Temperature and Humidity Sensor Module	N/A prime eligible	$1.41 down $0.07 *
KY-016 RGB 3 Color Full Color LED Module	N/A prime eligible	$0.79 up $0.06 *
KY-017 Mini Mercury Type Tilt Sensor Module	N/A prime eligible	$1.99 no change *
KY-018 photoresistor module	N/A prime eligible	$0.99 no change *
KY-019 5V Relay Module	N/A prime eligible	$1.34 down $0.08 *
KY-020 Tilt Switch Module	N/A prime eligible	$0.79 up $0.06 *
KY-021 MINI Reed Switch Module	N/A prime eligible	$0.99 no change *
KY-022 Infrared Remote Control Module	N/A prime eligible	$0.99 dow $0.05 *
KY-023 Game Joystick Axis Sensor Module Controller Shield	N/A prime eligible	$0.99 no change *
KY-024 Linear Hall Magnetic Module	N/A prime eligible	$0.99 down $1.85 *
KY-025 Reed Module Magnetic Reed Module	N/A prime eligible	$1.63 down $1.95 *
KY-026 Flame Module	N/A prime eligible	$0.99 down $0.50 *
KY-027 Magic light cup module	N/A prime eligible	$2.42 down $1.46 *
KY-028 Digital Temperature Module	N/A prime eligible	$1.76 up $0.15 *
KY-029 3mm Red and Green LED Common Cathode Module	N/A prime eligible	$2.85 down $0.15
KY-031 Knock Sensor Module	N/A prime eligible	$1.05 up $0.32 *
KY-032 Obstacle avoidance sensor module	N/A prime eligible	N/A
KY-033 Tracking Sensor Infrared Obstacle Avoidance sensor	N/A prime eligible	$0.99 no change *
KY-034 7 Color Flashing LED Module	N/A prime eligible	$1.69 down $1.95 *
KY-035 Analog Hall Magnetic Sensor Module	N/A prime eligible	$1.65 down $1.95
KY-036 Touch Module	N/A prime eligible	$1.93 no change *
KY-037 High Sensitivity Sound Detection Module	N/A prime eligible	$0.99 up $0.17 *
KY-039 5V Heartbeat Sensor Senser Detector Module	N/A prime eligible	$0.99 no change *
KY-040 Rotary Encoder Module	$7.99	$0.79 up $0.06
5x7 - 12x8 single/double sided PCB	N/A prime eligible	$0.99 - $2.39
2pcs 5x7 cm PCB	N/A prime eligible	$0.99
7x9 cm PCB	N/A prime eligible	$0.99
9x15 cm PCB	N/A prime eligible	$0.99
2 x 9V DC Battery Power Cable Plug Clip barrel jack connector	$6.99 for 5	$0.79 down $0.67 *
Battery Box holder ON/OFF Switch for 4 AA Batteries	$4.39	$1.18 up $0.19
5V Mini USB 1A Lithium Battery Charging Lipo Charger Module	$6.99	$0.99 down $0.48 *
1-Channel H/L Level Triger Optocoupler Relay Module	$8.60	$0.96 up $0.15 *
2-Channel H/L Level Triger Optocoupler Relay Module		$1.62 up $0.25 *
4-Channel H/L Level Triger Optocoupler Relay Module		$2.82 up $0.82 *
8-Channel H/L Level Triger Optocoupler Relay Module		$5.33 down $0.50 *
16-Channel H/L Level Triger Optocoupler Relay Module		$9.52 down $5.91 *
400 pcs 1/4W 1% 30 Metal Film Resistor Assortment	N/A prime eligible	$2.29
10pcs 3362P-102 3362 P 1K ohm High Precision Variable Resistor Potentiometer	N/A prime eligible	$1.79
10pcs 10K ohm 3362P Trim Pot Trimmer Potentiometer 3362 P103	N/A prime eligible	$1.79
10pcs 100K ohm 3362P Trim Pot Trimmer Potentiometer 3362 P103	N/A prime eligible	$1.79
10pcs B1K 3 pin Short Handle 15mm Linear Taper Rotary Single Potentiometer Panel	N/A prime eligible	$4.35
10pcs B10K 3 pin Short Handle 15mm Linear Taper Rotary Single Potentiometer Panel	N/A prime eligible	$2.35
10pcs B100K 3 pin Short Handle 15mm Linear Taper Rotary Single Potentiometer Panel	N/A prime eligible	$2.23
50PCS Photoresistor GL5506 LDR Photo Resistors		$1.99 no change *
20PCS Photoresistor GL5516 LDR Photo Resistors		$0.79 up $0.06 *
20PCS Photoresistor GL5528 LDR Photo Resistors	$5.30 down $0.90	$0.79 down $0.20 *
Reed sensor module	N/A prime eligible	$0.99 no change *
Electronic Brick Sound Sensor Microphone	N/A prime eligible	$1.09 no change *
Ultrasonic Module HC-SR04 Distance Measuring Transducer	$5.20	$0.89 down $0.10
Tilt Switch Module	$5.83 down $0.25	$0.96 down $0.03 *
Analog Temperature Sensor Module	N/A prime eligible	$1.01 up $0.02 *
Vibration Switch Module SW-18015P Vibration Sensor		$0.99 down $0.07 *
Knock Sensor Module		$0.79 down $0.24 *
Soil Hygrometer Humidity Detection Module Soil Moisture Sensor		$0.75 up $0.03 *
Rain Water Level Sensor Module Depth Detection		$0.99 up $0.06 *
LM393 IR Infrared Flame Sensor Module Board Wavelength 760nm-1100nm		$0.99 no change *
DHT11 Digital Temperature Humidity Sensor Moudle Probe		$0.99 up $0.12 *
DHT22 Digital Temperature Humidity Sensor Moudle Probe	$4.19	$2.87 down $0.02 *
2PCS Digital 38KHz Infrared IR Sensor Transmitter Kit		$2.11 down $0.71 *
3.7g Mini Servo		$2.19 sown $0.14)
Micro 4.3g Servo		$2.29 down $0.19
SG90 Micro 9g Servo		$1.86 up $0.10
SG90 Micro 9g Servo with horns		$1.86 down $0.11
S3003 Standard Servo		$3.95 up $0.40
I / O Expansion Sensor Shield For Arduino Nano/Mini		$1.40 down $1.35
MEGA Prototype Shield V3 Mini Bread Board		$2.37 down $1.52
Sensor Shield V4 Digital Analog Module for UNO		$1.80 down $0.91
UNO Sensor Shield V5		$1.65 down $0.84
UNO Prototype Shield With Mini Breadboard		$1.99 up $2.44
UNO Prototype Shield DIY KIT		$2.15 down $1.83
UNO Data Logger Module Logging Recorder Shield V1.0		$2.21 down $2.41
UNO 1602 LCD Board Blue Backlight Keypad Shield		$3.58 down $0.18
W5100 Ethernet Shield For Arduino	$9.99	$5.32 down $2.34
Stepper Motor Driver Board ULN2003 5V 4-phase 5 line MA		$0.73 down $0.26
ULN2003 Stepper Motor Driver Board		$0.92 down $0.07
Gear Stepper Motor DC 5V 4 Reduction		$1.22 down $0.38
ULN2003 Stepper Motor Driver Board with motor		$1.57 down $0.67
H-bridge Stepper Motor Dual DC Motor Driver Controller Board HG7881		$1.41 down $0.08
Dual H Bridge DC Stepper Motor Drive Controller Board Module L298N	$8.48	$1.81 down $0.54
5pcs 6x8.5mm Micro Miniature Stepper Motors With 2.8mm Black Gear		$1.47 down $0.02
AT24C256 Serial EEPROM Module I2C EEPROM Data Storage Module		$0.95 down $0.04
SD Card Module Slot Socket Reader		$0.73 down $0.26
100pcs 6x6x5mm 4pin Tactile Push Button Switch Momentary Tact DIP Through-Hole		$0.99 same
Black Color Rocker Switch 50V 6A 2 PIN		$1.49 up $0.01
140pcs U Shape Solderless Breadboard Jumper Cable Wire Kits		$2.12 down $0.77
65pcs Male to Male Solderless Flexible Breadboard Jumper Cable Wires		$1.24 down $0.25
40 1p-1p Pin Connector Dupont Wire 20cm Cable Line (female to female)		$0.95 down $0.04
40 1p-1s Pin Connector Dupont Wire 20cm Cable Line (male to female)		$0.97 down $0.02
40 1p-1s Pin Connector Dupont Wire 20cm Cable Line (male to male)		$0.99 same