Now I am going to describe an online controlled robot I am currently creating. I started with a plastic hobby box available from Radio Shack. I then mounted four geared DC motors into the bottom and installed the off road wheels. I like these geared DC locomotives. I got them from Tamiya United states. Tamiya USA has a lot of really neat parts to make a software. All you need to do is Google robot parts and you can find a lot of links to websites selling just without having. If you are with limited funds you may use the motors and wheels from a kids used remote controlled car. I've picked up broken remote control toys from second hand stores and hacked the motors and wheels.
Price: RC car modeling or racing is a really expensive hobby and lot of spending is involved. The ingredients are expensive for buy an individual also must discover that this hobby will financial impact a person a bandai model kits regarding money.