Walmart offers the Stanley FatMax 140-watt Power Inverter
, model no. PCI140, bundled with a Freestanding Keychain LED Light
offers the inverter alone for the same with free shipping for Prime members.) Opt for in-store pickup
to dodge the $4.97 shipping charge. That's tied with our mention from a week ago, the best now by $13, and the lowest price we've seen. It plugs into a car cigarette lighter and features a 1-amp USB port and two outlets.