You can get a pretty decent brushed or brushless setup from a company called Speed Passion. They are pretty reliable and easy to work with. The combo's they have on rcmart.com you can get for just under 50$ and it comes with the ESC, motor, fan, external BEC, and even a programming card. They have quiet a few different options on the Kv of the motor and settings of the ESC's also. You could also check towerhobbies.com they usually have pretty good deals and can get stuff to your doorstep pretty fast.