GeekBuying via Amazon offers the Tronsmart Quick Charge 18-watt Turbo Wall Charger in Black for $14.99. Coupon code "WALLCHAR" cuts that to $5.99. Plus, Prime members bag free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, it costs an extra $6.10.) That's $3 under our July mention and the lowest total price we've seen. (It's the best deal today by $14.) It features 18W adapaptive ports for QC 2.0 compatible devices which purports to reduce charging time by up to 75% and includes a 6-foot microUSB cable. It is also backward compatible at a normal rate of charging for other devices.