Vority via Amazon offers the Vority X5S Charging Case for iPhone 5/5S in Black for $39.99. Coupon code "DE69XEVY" cuts it to $24.99. With free shipping, that's the lowest total price we could find by $42. This case features a kickstand, seven variously colored bumper frames, and purportedly an additional 167% extra battery time for iPhone 5 or 150% for iPhone 5S.