BuyDig offers the Arkon Supercharge Car Mount for iPhone, model no. IPMPWR, for $5.99 with free shipping. That's tied with our mention from two weeks ago for the lowest total price we've seen. (It's a current low by $6.) It features a windshield suction mount, charging cable, and 360-degree swiveling action. It's compatible with iPhone 4/4S and iPhone 3/3G.