I recently got a Rosewill X800 XL PCI-Express refurb for $217 shipped from newegg. It worked but exhibited severe artifacting and crashed my computer when I tried to run 3DMark05. I swapped it out with a nearly-identical ATI-branded X800 XL which works fine, so I'm sure it was the refurb that was the problem. I'm having no problems returning the defective unit to newegg since I'm within the 15 day grace period.
The refurb came in a Rosewill box with all cables, CD, etc. (although the CD was cracked). On a lark I tried to get warranty service through Rosewill but they refused and said to go through newegg.
Too bad -- woulda been a great deal for an X800 XL. If it's a great deal, I still think it's worth a try since you can always return it if it's bad. The lack of warranty probably isn't a problem either, since by the time it craps out naturally you'll probably want to upgrade anyway.
Incidentally, I'm having horrible problems trying to install the ATI software and drivers. I can't tell if the problem is Windows (for some reason I can't successfully install SP2), my DFI Ultra-D mobo, the ATI drivers, or what. I keep getting a "Severe: Zero Display Service Error" while installing the ATI drivers and haven't found any good answers on the net. I probably can't blame the refurb for messing everything up, but I still wonder...