Nubeestore via Amazon offers the Volmate 8-Port USB Desktop Wall Charger, model no. VOL60W-8P, for $23.97. Coupon code "VOLWC8OF" cuts the price to $15.97. Plus, Prime members receive free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping costs $6.52.) That's $84 off list and the lowest total price we could find. It supplies up to 2.4 amps per port or 12 amps all at once.