We've had a variation of this attempted when trying to sell a vehicle online. The scam is not specific to the item being sold, because they have no intention of picking it up. Rather, you are sent a realistic Paypal money transfer notification, and are asked to put most of it (since the amount is higher than the purchase price) into some sort of Moneygram transfer "for the person who will pick it up."

Paypal has an email listed on their site, IIRC, where you can send these, and it will tell you if it really came through them. Ours had not.