Store4PC via Amazon offers the Sabrent 50-watt 5-Port Desktop USB Charger in White or Black, model no. AX-U5PB, for $25.99. Coupon code "AXU5PB15" cuts it to $15.99. Plus, Prime members bag free shipping. (Non-members can get free shipping with orders of $35 or more; otherwise, shipping adds $5.46.) That's $34 off list price and the lowest total price we could find. It features up to 2.4 amps per port (10 amps max) and is compatible with most USB-charged devices.