All4Cellular offers the OEM OtterBox Defender Case with Holster for iPhone 4S in six colors for $19.95. Coupon code "A4C25" cuts it to $14.96. With free shipping, that's tied with our September mention and the lowest total price we could find, this time by $15. It features a clear protective membrane for the touchscreen plus openings for the camera lens, dock connector port, and home button. Coupon expires December 9.

Note that although these are new, they are bulk shipped and may have some scratches.