とても安い。オムニホイール

Welcome to RobotShop U.S.A.
http://www.robotshop.com/store

http://www.robotshop.com/home/products/Robot-Parts/Mechanics/Wheels-and-Tracks/index.html
http://www.robotshop.com/home/products/Robot-Parts/Mechanics/Wheels-and-Tracks/index.html?p=3-20


Dagu Omni Wheel - 50mm USD $3.43
http://www.robotshop.com/dagu-omni-wheel-50mm.html
Dagu Omni Wheel - 41mm USD $3.95
http://www.robotshop.com/dagu-omni-wheel-41mm.html
Dagu Omni Wheel - 48mm USD $4.10
http://www.robotshop.com/dagu-omni-wheel-48mm-2.html
Dagu Omni Wheel - 40mm USD $6.45
http://www.robotshop.com/dagu-omni-wheel-40mm-2.html
40mm Omniwheel w / Hub for Servo USD $8.80
http://www.robotshop.com/40mm-omniwheel-w-hub-servo.html
48mm Omniwheel for LEGO NXT, Servo USD $15.00
http://www.robotshop.com/48mm-omniwheel-lego-nxt-servo.html

Brushed DC Motor Controllers
http://www.robotshop.com/brushed-motor-controllers.html
Dagu 4 Channel 5-12V, 2A Brushed DC Motor Controller USD $23.12
http://www.robotshop.com/dagu-4-channel-brushed-dc-motor-controller-3.html

Gear Motors
http://www.robotshop.com/gear-motors.html

１個５００円前後なら小遣いためて買えるかな。
日本でも購入して送ってもらえるのかなあ。