There’s no better way to start learning about spider robots than tinkering with an Arduino robot spider kit. It gets you started both with servo motors and Arduino programming.
The kit includes 58 parts that actually represent the frame kit only. The Arduino microcontroller and the servos are not included. Besides the 20 servo motors, you need a power supply and a charger.
It’s nice that the kit doesn’t just concentrate on the spider robot. It is also a good platform for anyone interested in starting learning about robot gripper.
Arduino Robot Spider Kit With Gripper ($160.50)