How much should i sell my mini chopper for?

I have a 2008 mini chopper 125 cc and it has only been used about 10 times. Runs great and i am wondering how much i should sell it for. I just replaced the battery because it fried over the winter. I have been searching the web and they can go from $300 to $2000. I dont know how much mine would be worth.|||Start at $700 and sell it for $600