AnkerDirect via Amazon offers Prime members the Anker Ultra Slim Bumper Case for Apple iPhone 6 in Black or Grey for $5.99 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, it adds $5.01.) That's $10 off list and the lowest total price we could find. It features a flexible bumper frame, clear polycarbonate back cover, and access to all ports and buttons.