it all depends on what you wanna run, 1/10 1/8 truck, buggy, short course, if you want a good cheap rtr that actually is competitive id check out the associated rc10b4.1 and the rc10t4.1 RTR s they come with brushless systems already installed, the buggy is about 2-25o depending on where you get it and i think the truck is like 10-20 more than that,, iv had mne and only raced it a handfull of times, and it handles very well and is very competitive outta the box, it just wont hit speeds as fast as the 600 dollar custom built buggies when it goes down the straight, but a gearing change can get you somewhat close

most of the parts for these can be ordered everywhere and are very cheap,, all i have broken so far is a tie rod end, which were upgraded for 3 dollars to RPMs that are twice as thick,, a arms and maybe shock towers are all you should need