The Best In Class via Amazon offers Prime members the Ion Audio iCADE Mobile Game Controller for iPhone in Black, model no. ICG07, for $7.89 with free shipping. (Non-members can spend $35 to qualify for free shipping; otherwise it adds $5.72.) That's $4 under last week's mention and the lowest total price we could find today by $4, outside other Amazon sellers. It fits the iPhone 3G, 3GS, 4, and 4S, as well as the 3rd and 4th generation iPod touch, and features Bluetooth, buttons, a D-pad, and rotating cradle. It requires two AA batteries (included).