I called four of the vendors that advertise AMD parts. I told them I was quoting a large order. I sent each of them my list and had them quote. Two of them vendors were very close (and low) on pricing. One was close (about 10% higher) and another way out there (+25%). In the end, shipping costs drove the decision. Also, the lowest were the most knowledgable and easiest to talk to about the AMD products.

But, if you are at the Nats this week, I would guess you could get a pretty good deal, and not have to pay for shipping.