AnkerDirect via Amazon offers its Anker ToughShell Case for iPhone 6+ / 6s+ in Gunmetal, model no. AK-B7045011, or Silver, model no. AK-B7045041, for $17.99. Coupon code "7I3NHOTY" cuts it to $9.99. Plus, Prime members bag free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $6.18.) It's $12 off and the lowest total price we could find. This phone case features a GlassGuard+ tempered-glass screen and ShockShield case with GravityGuard technology.