Even if it was $1,000 I personally wouldn't fool with it.
I've dealt with chinese race pitbikes in the past and their fun for a short period of time but not something I would want to keep for an extended period of time. The parts issue was the biggest gripe for me since they make a lot of minor changes throughout a model year it can make things a pain.
You spend more for the big brand names but for the $$ it saves you a lot of time, potential headaches etc. I've gotten more and more lazy to where I'd rather ride than work on it, so yeah, I'd have to pass even if I was saving $1,500+ on the inital purchase.
Plus when it comes to aftermarket go fast & look good goodies the knock off brand department is seriously lacking compares to the big brands.