Looking to buy a pit bike, advice?

[N1c0_ds]

I tried one, fell in love and I'm looking to buy one of these. It's a 125cc model, 2006, 700$.

Anyone have one? Is there anything I should watch for before buying it?

http://images.google.ca/images?hl=en&q=pit+bike&btnG=Search+Images&gbv=2