Amazon offers the Belkin Grip Power 2,000mAh Battery Case for iPhone 5 in Blue (pictured), model no. F8W292ttC02, or Purple, model no. F8W292ttC03, for $69.27 with free shipping. (B&H Photo Video and Lgeoo via eBay charge pennies more for the Purple case.) That's the lowest total price we could find in either color by $7. It features a shock-resistant bumper, anti-glare camera ring, microUSB charging cable, and headphone adapter.