As one of its daily deals, Groupon offers the Incipio Destroyer Ultrarugged Case with Holster for iPhone 4/4S in five colors (Black pictured) for $11.99 plus $2.99 for shipping. That's the lowest total price we could find for this case in any color elsewhere by $14. It features an inner shock-absorbing silicone skin, polycarbonate exterior shell, and holster clip. It comes with a screen protector and cleaning cloth. Deal ends October 18 at 12:59 am ET.