This is weird... but I guess I can take a cash deposit. Shoot me a PM. It does seem odd so I will take my cautions.
My advice is to have this person send the
BTC to you first... (Or, at the very least have them sign a message with their coins).
Use
Escrow with caution too...
Hmmmm...
They could always send in 28 0.5 BTC payments. I'd've thought that this would have been a better idea than using an escrow, as they would most likely charge 1% (0.14 BTC) for the transaction (quite a large amount of Bitcoin for such a transaction)!