Meritline offers the Otterbox Impact Case for Apple iPhone 4 in Black, model no. APL1-I4UNI-20, for $12.49. Coupon code "MLC61B3CNL1" cuts it to $8.99. With free shipping, that's tied with our mention from early May and the lowest total price we could find, this time by $4. This case features a self-adhering clear protective film, dual-layer silicone, and more. Coupon expires after 500 uses.