As one of its daily deals, All4Cellular offers the refurbished LifeProof Waterproof Case for Apple iPhone 4 / 4S in four colors (Black pictured) for $19.99 with free shipping. That's $2 under our mention from two weeks ago and the lowest total price we could find by $24. It features 6.6-foot drop shock protection; it's also waterproof to depths of 6.6 feet. Deal ends today.

A 90-day All4Cellular warranty applies.