As one of its daily deals, All4Cellular offers the refurbished LifeProof Waterproof Case for Apple iPhone 4 / 4S in Black (pictured) or White/Gray for $19.99 plus $2 for shipping. That's tied with last week's mention and the lowest total price we could find for a refurb by $7. 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.