MegaMacs offers the Speck Hard Shell Case for 13" MacBook Air
in Smoke, model no. MBA-SMK-SEE, for $7.99
for shipping. That's the lowest total price we could find for this case in any color by $13. This 2-piece case snaps on the top and bottom of your 13" MacBook Air. Deal ends February 1.
Update: According to the product page, this case is designed to fit MacBook Air models released before 2010.