Epicka Store via Amazon offers its Epicka Universal USB Travel Power Adapter for $21.99. Coupon code "5HHY5YMD" cuts it to $14.99. With free shipping for Prime members, that's tied with our mention from last week and the lowest price we could find by about $11. It accepts US/EU/AU/UK plugs, works in over 150 countries, and includes four USB charging ports. Deal ends June 30.