As one of its daily deals, Sunvalleytek via Amazon offers Prime members the RAVPower 60-watt 12-Amp 6-Port USB Charger in Black or White for $16.97 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, it costs an extra $6.55.) That's $23 off and the best price we could find. Deal ends today.