REI offers the LifeProof LifeActiv QuickMount Adapter in Black for $5.83. Opt for in-store pickup to dodge the $5.99 shipping charge. That's the lowest price we could find by $12. It bonds to the back of your phone case and features industrial-strength adhesive.

Also available is the LifeProof LifeActiv Belt Clip for $8.83. Opt for in-store pickup to dodge the $5.99 shipping charge. That's another low, by $11. It features a two clip design and locking switch.