I agree, there a fairly good bike, but not worth $850. If your going to get one, get it off ebay as you could get one for about $600 Which is worth it, in my opinion Or you could save the exra cash and get the pit pro 140xr for about $900- $1000 ( thats what buying for christmas)
I have a 09 pitpro 125 and I say they are not worth 850. Around 600 is a good price and you will get one easily off ebay for that if your patient. Consider that 850 plus postage (about 200) comes to 1050, Youll get a better bike for similar price range if you shop around. Ther are good second hand bikes in the classifieds section if you do a bit of research on them.