IBD Electronics via Amazon offers the Okra Universal Magnetic Vent-Mount Car Smartphone Holder for $9.99. Coupon code "GJ3SF59W" cuts it to $6. Plus, Prime members receive free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, it adds $6.01.) That's a buck under our mention from November and the lowest total price we could find by $6. This device features three magnetic plates to mount your smartphone to a car vent.