Did the same at Best Buy. The $100 deposit is actually a gift card. Not a bad idea. At least if you find one somewhere else, you can still use the gift card on something else. Best Buy has your money either way.
Reserved one at Best Buy 2 weeks ago today, still no call. Found out I'm "next" on the list. Should have reserved one at more than one Best Buy. Could have used the gift cards when one finally hit.