Tony,
You'll find this place to be a small close knit community, who feel (and many rightly) that they know the in's & out's of the empeg from its conception.
All are to well aware of the number of empegs produced, and of their availability. So when you come striding in saying you can get ten 10GB units for $520 plus more you are going to be met with suspicion.
Now while you might be a honset individual, your supplier might not - please bear in mind we don't know either of you from Adam.
I would suggest you find some way of confirming your supply chain. The best way that comes to mind would be for you to get the serial numbers and to have them confirmed by empeg - I know someone here can do that for you.
While many here would love the chance of an empeg (any empeg) for ~$500 no one whant to get taken for a ride.