Ebay offers Refurbished Firman 4,000W Electric Start Dual Fuel Inverter Generator for $359.99 (reg $449.99) after code with free shipping.

Apply Code: SUNNYSAVINGS

Product Description:
The FIRMAN WH03242F is a 3200/4000W 30A electric start RV-ready portable generator, running on both propane and gasoline for the best of both worlds.
The WH03242F is a part of the Whisper Hybrid Dual Fuel Generator Series. It runs at a quiet 58dB, well below National Park standards.
It's the ideal solution for those on the go and those who enjoy camping, tailgating, and other recreational activities. Enjoy clean, renewable, quiet power on the go with the WH03242F.