Paydeals offers the WolfGuard Universal Windshield/Dashboard Smartphone Mount in Black or Black/Orange for $9.99 with free shipping. That's the lowest total price we could find by $8. It's compatible with most models of smartphones.
New customers can apply coupon code "PAYDEALS" to cut the price to $8.99. (You may need to wait and enter the coupon code on the final page of checkout.)