Daily Sale offers the Polaroid Universal Slim Sleeve Case for 7" Tablets in Red model no. PAC270RD, for $9 with free shipping. Outside of the mention below, that's the lowest total price we could find by $2. It features microfiber lining and is compatible with most 7" tablets including the iPad mini, iPad mini 2, Kindle fire, and Nexus 7.
Note: The countdown timer on the product page does not reflect an actual expiration time and resets daily.
A lower price: Shopper Jack via Amazon offers it in Orange for $8.63 with free shipping for Prime members, although stock is limited.