Factory Direct Prices via Buy.com offers the Pentagon Tools 3,500-watt Electric Start Portable Gas-Powered Generator for $429.99 with free shipping. That's the lowest total price we could find by $20. It produces a 4,400-watt max and 3,500-watt continuous power output and features an electric starter, 4-gallon gas tank, two 3-prong standard household outlets, one 120/240-volt twist lock outlet, hour meter, and more.