jspoon is right, scam him. But then again, I am one who has teh telemarketers tell me all about it, then put them on hold, then ask more questions until i have tied up at least 15 minutes, maybe more.
personally I would agree to a price, get his check and turn it in to the police.

 

I would let him get excited for another scam, and then send him a Hot WHeels toy ATV. I'm glad your internet savy, and can find out its a scam before its too late.

 

DOn't give him your address he will steel your 4 wheeler it happens all the time. WHen you are trying to sell never give your address or your **** will dissapear.