Wow, my heart had stopped beating for a moment there. That's quite a pricing error, I'll say. They'll certainly be catching a lot of hell if they don't honor the orders that went through. They're catch even more if they try to push them off onto those same people at $449US; store monkeys seem to not be able to get it into their thick heads that people go after the PRICE, and there really is little such thing as "store loyalty," particularly online. (there's "Newegg loyalty," but that's a whole different basket)
The real shame for me, of course, is that I built my PC just before PCI-express became availible for Athlon64s. Oh well. I guess my X800XT will still do fine until I replace my machine.