Factory Authorized Outlet via eBay offers the DuroMax 3,500-watt Hybrid Dual Fuel Propane/Gas Portable Generator, model no. XP4400EH, for $319.99. Coupon code "CHOMEDEALS20" cuts it to $299.99. With free shipping, that's $90 under our April mention and the lowest total price we've seen. (It's a current low by $200.) It features a 4-gallon fuel tank, power panel with engine shut-off switch, volt meter, and eight hours of run time at 50% load capacity. Deal ends May 26.