Walmart offers the Sportsman 1,400-watt Portable Gasoline Generator, model no. GEN2000, for $149.98 with free shipping. (Amazon charges the same exclusively for Prime members.) That's the lowest total price we could find by $92, although we saw it for a buck cheaper in January. This generator runs on unleaded gasoline and features a 2.6-HP engine, 3,600 RPM, recoil start, 2,000-watt surge, circuit protection, and 9-hour runtime at 50% capacity.