Entronik via Amazon offers Prime members the Aduro U-Stash Storage Case for iPhone 4/4S or iPhone 5/5S in four colors for $9.99 with free shipping. (Non-Prime members can spend $35 or more to qualify for free shipping; otherwise, shipping adds $5.44.) That's a buck below our December mention and the lowest total price we could find. (A close price is listed below.) It features a card slot for storing credit and ID cards and access to all buttons and ports.

A close price: Groupon offers these cases for $7.99 plus $2.99 shipping.