It's the price of an X1800XT. Even at $180, the 7900GS doesn't make sense when an X1800XT will slaughter it for $20 more.
EDIT: The $200 X1800XTs are, once again, gone from newegg (damn; those went really fast this time), but they should come back in stock. In the meantime, THIS
is a really good deal. Some people might not like that it's open box, but it's still an X1800XT for $180.
All the cheap X1900GTs have dried up, as well. It seems that all the good ATI deals are disappearing
. Damn. I guess one should just monitor newegg religiously, and order the minute they come back in stock.