why not check out
Memory Man? His stuff is pretty good and they all have a lifetime warranty? A stick of his generic 256MB PC133 RAM is $150.
I've dealt with him before and his replacement process is simple and fast. I had my new stick in less than a week, and that includes my shipping time.
Not a plug here, just saying you can probably find better, more reliable deals out there. Heck, even check out
Muskin's. Stick of his with Samsung chips is only $189. Still a better deal than Buy.Com in my opinion.