PoweraddDirect via Amazon offers Prime members the Poweradd 25-watt 5-Port USB Wall Charger, model no. AR-2813, for $11.99 with free shipping. (Non-members can spend $35 to qualify for free shipping; otherwise, shipping adds $6.58.) That's tied with last month's mention, $38 off list, and the lowest total price we've seen for this charger. It's compatible with all 5V USB-charged devices like iPads, iPhones, Samsung tablets, and more.