SunValleyTek via Amazon offers the RAVPower 50-watt 6-Port USB Charging Station
in Black or White, model no. RP-UC10, for $15.99
. Plus, Prime members bag free shipping
. (Non-members can bag free shipping with orders of $35 or more; otherwise, shipping adds $6.98.) That's tied with last month's mention as the lowest total price we've seen. (It's the best deal today by $9.) It's compatible with most USB-powered devices.