Man I have been having issues with my wow installation and couldnt find my wow disks to reinstall. I finally found the disks and reinstalled and am up in running....so i should be back online tonight.
not sure if they sell them or not anymore, but Fry's used to sell demo discs for 1.99 (DVD) - beats the original installation and they're cheap. I think they may have dropped them though as I've seen the original WoW in stores now...lame.