According to research firm Piper Jaffray (via TUAW) Apple sold about 500,000 iPhones between 6pm Friday afternoon and close of business on Sunday night. They also revealed that 95% of sales in major markets like San Francisco, New York and Minneapolis were for the 8 gig model. I can also attest to the fact that even here in Texas the various places I contacted all sold out of 8 gig iPhones very quickly, with plenty of 4 gig stock to be had.
Apparently about half of the buyers were new At&t customers as well.
If you do the math we have 475,000 sold at $599 and 25,000 sold at $499 (excluding tax). That adds up to $297 Million dollars worth of iPhones sold in the first 2 1/2 days the product has been available.
Not too shabby.