The buyer should not be faulted when the seller is a scammer, but come on. A nice 730 D for $2,500? Did that not just set off red flags everywhere as to it being real? How about the long drawn out stories about advertising it in 10 states. That is impossible to believe. And the whole Money gram garbage, that is a farce in itself.
Hope you are not out of any money.
Anytime it sounds too good to be true, it likely is.
He is still at fault.