Cambond via Amazon offers its Cambond Clear Universal Waterproof Cellphone Case 3-Pack in Black/Blue/White for $12.99. Coupon code "22E864EG" drops it to $8.99. Plus, Prime members bag free shipping. That's $2 under our June mention, $17 off, and the lowest price we've seen. These IPX8-certified cases are waterproof up to 98 feet. Deal ends April 20.