CEN Racing has some pretty nice vehicles. Most of their stuff is nitro powered. The low end items cost around $199 for the RTR Below is a decent list for you to check out.
http://www.cenracing.com/cars/mg10/mg10.html $199.99 RTR Street Price
http://www.cenracing.com/cars/nx/mtspec30.html $279.99 RTR Street Price
http://www.cenracing.com/cars/gsr/gsr50.html $379.99 RTR Street Price
Hope this helps! Good luck and welcome to the hobby!