Sunvalleytek via Amazon offers Prime members the HooToo 4-Port USB Charging Station, model no. HT-CT01, for $17.99. Coupon code "U7RGXF7E" drops it to $9.99. Plus, Prime members qualify for free shipping. (Non-members can spend $35 to qualify for free shipping; otherwise, it adds $5.99.) That's $4 under our mention from earlier this winter, $60 below list price, and the lowest total price we've seen. It features two charging ports with up to 2.4 amps, two charging ports with up to 1.5 amps, and over-charge, surge, and short-circuit protection.