Epicka Store via Amazon offers its Epicka Universal USB Travel Power Adapter for $19.99. Coupon code "E2RF9HJI" drops it to $14.99. Plus, Prime members bag free shipping. That's tied with last week's mention and the lowest price we could find by about $9 today. It accepts EU/AU/UK plugs, a USA polarized plug, and includes four USB charging ports. Deal ends April 17.