Tri-State 1 via eBay offers the Armor-X ArmorCase All-Weather Waterproof Case for iPhone 5/5s in Black or White for $24.99 with free shipping. That's tied with our mention from three weeks ago and the lowest total price we've seen. (It's also a current low by $25.) It's purportedly waterproof up to 6.5 feet deep and for up to 30 minutes.