You can try at Sofitel(building beside Mercurie Hotel) Mushreib area, I bought my mid tower Corsair Obsidian 350D chassis there. don't expect much since they don't keep much of this branded chassis there.

Another option is to order from this site http://gear-up.me. which is based in Dubai. it only would take 2-3 days for the good(s) to arrive and good thing is that the selection is broad.

Hope this helps.