Groupon offers the Otterbox Preserver Series Case for iPhone 5/5S or Samsung Galaxy S4 in five colors (iPhone Carbon pictured), model no. 77-36355, for $29.99 with free shipping. That's tied with our August mention and the lowest total price we could find in either style by at least $5. This case is waterproof up to 6.6 feet and features a built-in screen protector. Note that it's not available in all style/color combinations.