I must second the poor ATI rebate post. Took me 9 months to get a $10 rebate from them a few years back, and 8 months on a $20 rebate about a year and a half ago.
To me, it isn't worth waiting 6+ months to save <$20, but thats just MHO.
edit: ya'know, I'm looking at pricewatch here, and there are plenty of places (newegg being one) to get this card for about $320 shipped.
Depending on where you are, TAX is gonna push this baby up over that. (for example, my tax is 7.75%, so the card would actually be 327+ after both rebates). You're gonna be paying sales tax on $350, as mentioned earlier.
So, depending on your local tax, this probably isn't even cheaper than online AFTER the rebates....
j