CTCStore offers Amazon Prime members the Acase Superleggera Case for Apple iPhone 4 and 4S in Black for $14.95. In-cart, that drops to $5.95. With free shipping, that's tied with our December mention and the lowest total price we could find by $11. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $5.14.) This dual-layer polycarbonate and silicone case protects against dust and scratches. Deal ends July 13.