EasyAcc via Amazon offers Prime members the EasyAcc 40-watt 5-Port Portable USB Desktop Charger, model no. 5U8A, for $19.99. Coupon code "MZEDANJX" cuts it to $15.99. With free shipping, that's $21 off and the lowest total price we could find. (Non-Prime members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $6.33.) It features two 2.4-amp ports, a 1.2-amp port, and two 1-amp ports.