Ebay offers Refurbished DuroMax 10,500W Dual Fuel Hybrid Portable Generator for $799 with free shipping.

Product Description:
The DuroMax XP13000EH is a Dual Fuel workhorse powered by a 500cc OHV Engine and runs on gasoline or propane. This unit provides the power normally found in stationary home standby units but in a portable package. With 10,500 watts of running power and the ability to surge up to 13,000 watts, this generator can power household essentials such as lights, small and large appliances, and your home's central A/C system. The fully loaded power panel features multiple outlets including 2 120V GFCI protected household outlets, and individual breakers to prevent overloading and keep everything safe. 
Key Features:

• Dual Fuel Technology Switch between gas or propane for flexibility
• CO Alert Carbon monoxide shutdown for added safety
• Electric Start Push-button ease with backup recoil start
• MX2 Power Boost Get full power from each 120V outlet
• All-Metal Frame Rugged and durable construction
• Fully Loaded Power Panel Includes GFCI outlets, 50-amp outlet, and more

What's Included:

• DuroMax XP13000EH Generator
• Wheel & Handle Kit
• Propane Regulator
• User Manual