LumsingDirect via Amazon offers the Lumsing 20-watt 2-Port USB Car Charger in Black or White, model no. 206-1013-1191, for $9.99. Coupon code "DUALCAR1" drops it to $4.99. With free shipping, that's a buck under the lowest total price we could find for a similar item. It's compatible with iOS and Android devices. Deal ends January 14.