CTCStore offers Amazon Prime members the Acase Superleggera Case for Apple iPhone 4 and 4S in Black for $7.95. Coupon code "LLZDZRO2" cuts it to $5.95. With free shipping, that's tied with our November mention and the lowest total price we could find by $9. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $5.07.) This dual-layer polycarbonate and silicone case protects against dust and scratches. Deal ends January 6.