The AUKEY Graphite Wireless Charger drops from $30.99 to $21.07 when you apply the code FORDAD04 during checkout at Aukey Direct via Amazon. Checkout using an Amazon Prime account or a Prime free trial to get free shipping and avoid the $5.99 shipping fee. These chargers are only sold through Aukey's Amazon store, but this is $7 less than the lowest price they've ever dropped to. They're compatible with Qi-enabled phones, like the Samsung Galaxy S7 through S9 line of phones and the iPhone 8 and X. Sales tax is charged in most states.