@Jeff
I'd bet you that the seller will just tell you that what you got is what you paid for.
Seeing the questions asked and answered, he doesn't know what he is selling, as all he can tell is that it powers on.
If you can't get in touch with the seller in case you want to return it, then go to your credit card company. If they cancel the payment, I will bet that he will get in touch with you, but be sure that you will also get negative feedback on eBay....