Max Tool Sales via eBay offers the DuroStar Gas-Powered 3,300-watt Portable Generator, model no. DS4000S, for $199.99 with free shipping. That's tied with our September mention and the lowest total price we could find by $71. It features a 4,000-watt surge, 3,300-watt running power, and up to 8-hour runtime at 50% load with its 4-gallon fuel tank.