You can buy GMAT books in Borders - MoE had several in their sale last week - go to the Eduction section towards the backon the right, next to Reference - I think most were around 40/50 dhs.
Has anyone taken the GMAT recently (and willing to sell their prep books)? Any suggestions on which study materials to buy? I only have a couple weeks to study so I need to be picky and realistic about how much I can cram...