Update: This extremely popular deal is back with a new promo code.

Aukey Direct via Amazon has Aukey Quick Charge 2.0 18W USB Wall Charger + 3.3' Micro USB Cable (Black or White) on sale for $11.99 - $7 w/ promotional code C398PPH5 = $4.99. Shipping is free with Prime or if you spend $49 or more.