no i would expect to spend < $100 and possibly learn something though. It's been a vexing problem for me since I don't quite know what to buy or look for, quite what to match up against motors + small cpu (such as an arduino) and motor control boards -- and understand it to be a well understood and easy-ish problem for those in the know.
I've been using batteries but they are cumbersome. My 18v ryobi tool battery appears to work pretty darn good but it's the wrong shape. It's ok otherwise and I already have the chargers.
I married that to a pololu motor controller(s) sized to a wide voltage input and fairly large -- i had a rasberry pi on there but since have gone to the arduino.
But none of that from track power. anyway it's my problem not yours. i was just curious about the limitations.
