Hittime_3c via eBay offers the Rotating Smartphone / GPS Car Mount in White for $1.12 with free shipping. (It's also offered in three other colors for a few cents more.) That's tied with our mention from a week ago and the lowest total price we could find for such a mount by a buck. It features a rotating clip that attaches to most air vents.
Note that this item ships from China with an estimated shipping time of two to eight weeks.
Dollar stores lure us in with their rock-bottom prices, but not everything is a bargain. We suggest you steer clear of these items.