Groupon offers the OtterBox Defender Hybrid Case with Holster for iPhone 5 in Black, Glacier White, or Blue Night, for $19.99 with free shipping. That's the lowest total price we could find for this case in any color by $17. (Most places sell it for $37 or more.) It features three layers of protection, locking polycarbonate shell, and belt clip holster. Deal ends December 20 at 12:56 pm ET.