BuyDig offers the Arkon Supercharge Car Mount for iPhone, model no. IPMPWR, for $3.99 with free shipping. That's $2 below last month's mention and the lowest total price we've seen. (It's a current low by $11.) It features a windshield suction mount, charging cable, and 360-degree swiveling action. It's compatible with iPhone 4/4S and iPhone 3/3G.