Walmart offers the Sportsman 1,400-watt Portable Gasoline Generator for $169 with free shipping. That's the lowest price we could find by $59, although we saw it for $20 less in May. This generator runs on unleaded gasoline and features a 2.6-horsepower engine, 3,600 RPM, recoil start, 2,000-watt surge, circuit protection, and 9-hour runtime at 50% capacity.