Gooloo via Amazon offers the Gooloo USB Travel Charging Set for $9.99. Coupon code "45GAJOZE" cuts it to $5.99. Plus, Prime members receive free shipping. (Non-members can spend $49 or more to qualify for free shipping; otherwise, shipping costs $5.99.) That's $16 off list and lowest total price we could find. It includes a wall charger and 3.3-foot 2-in-1 microUSB / Type C cable.