As one of its daily deals, All4Cellular offers the refurbished LifeProof Case for iPhone 4 / 4S in White/Grey (pictured), Black, or Purple/Black for $19.95 with free shipping. That's tied with our refurb mention from two weeks ago and $20 less than the lowest total price we could find for a new unit elsewhere. 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.