Entronik via Amazon offers Prime members the Aduro U-GRIP Universal Car Mount for Smartphones, model no. UNI-SPH01-CM, for $19.99. Coupon code "M3L4W8XY" cuts it to $11.99. Plus Prime members qualify for free shipping. (Non-members can spend $25 or more to qualify for free shipping; otherwise, shipping costs $5.14.) That's $8 below what Entronik charges via its eBay storefront and the lowest total price we could find, although it was a buck less last month. It features 360-degree rotation and compatibility with most smartphones, including the iPhone, Galaxy Note, and more.