Best Buy offers the LifeProof Fre Waterproof Case for iPhone 6 in White, model no. 77-50305, for $22.99. Opt for free in-store pickup to dodge the $5.49 shipping fee. That's the lowest price we could find now by $8, although we saw it for $5 less last week. It purports to be fully submersible to 6.6 feet for one hour.