Amazon offers its Prime members the PowerA DualShock 4 Controller Charging Station bundled with a USB Cable for $13.89 with free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $4.98.) That's tied with our mention from last August (which didn't include a USB cable) and $6 under the lowest total price we could find for the charger alone elsewhere. This station charges two controllers at once and includes an AC adapter.