Sounds exactly like the scam a friend of mine was getting into. She tells me she is finally getting rid of her Jetta for a "new" car. She tells me it's like a 2003 Mercedes Benz E-Class for $12k.
I said first thing, before you go on telling me about the car.....did he mention shipping, out of the country, or anything involving a check from a bank, etc.? She said yeah, how did you know? I just laughed a little and said trust me, it's a scam. Don't bother.