here's something similar that happened to me today:
I saw your ad on the posting site and i want to know if your airstream trailer still available for sale,What is the asking price,I will like to pay using PayPal,After payments has been made,I will arrange for the pick-up and will you let my pick-up agent to come to you house for the pick up? Because i don't want you to worry yourself about the shipment.
Two airstream trailers - Airstream Trailer Classifieds - Airstreams Trailers For Sale
and this is the email from the scammer: email@example.com