I'm just going to add in my two cents....

If your buying off an online trading site, watch out for scame. I just got a scam... The buyer (somehow) tempted me enough to buy the car without it running, all because the glow starter needed charging (it was a nitro car).

If your interested in a car online (on ebay or whatever), post some pictures of it (I don't think we're allowed to post the link), these super-smart-doods at RCU will tell you what's up on it. But the best thing you can do is see it going before you buy it eh?

Good luck on it (I know I'll need it)