HandHeldItems offers this Sliding Bluetooth Keyboard Case for iPhone 4 and 4S, model no. BT-KYB-PHONE, bundled with a $1 HHI store credit for $27.99. Coupon code "20iphonecs" cuts it to $22.39. With free shipping, that's $11 below our July mention of a similar item and the lowest total price we've ever seen. (It's also current low for such an item by $13.) This hard case fits both the AT&T and Verizon iPhone 4 or 4S and features a sliding bluetooth keyboard, built-in rechargable Lithium battery, and more. Deal ends November 15.