Walmart offers the Sportsman 1,400-watt Portable Gasoline Generator, model no. GEN2000, for $149 with free shipping. That's the lowest total price we could find by $40, although we saw it for a buck less last December. 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.