I have to go very soon so I need to make this short but I highly recommend saving more then $300 for a buggy. $300 will get you some of the ofna RTRs but you'll need to upgrade atleast the radio and servos pushing that to about $400+ at the very cheapest. Not to mention that they don't come with oil in the diffs so you'll have to buy silicon diff oil along with fuel, rechargable glow ignitor, tires and rims (if your racing), glow plugs, reciever pack, and a few other odds and ends.

I'd recommend getting the hyper 7 TQ kit. It costs about $200 for a rolling chassis then you put in your own engine and electronics. By the time your done it would cost about $600. Sorry I can't give you more info but I'm late getting to the track already .