Ebay offers Refurbished Sportsman 4000W Gasoline Generator for $299.99 (reg $399.99) with free shipping.

Product Description:
4000 surge watt/3500 running watt, 4-stroke OHV, recoil start with engine shutoff switch. High altitude use: This generator is not recommended for high altitude use above 3,000 ft. (4) 120-volt outlets, one 120-volt RV outlet and one 12-volt DC outlet for battery charging; 120-volt, 60 HZ. Engine run time: 10 hours at 50% load; decibel rating: 69 DB. Automatic low oil shutdown, circuit breakers and UL listed electrical components.  EPA approved. Gasoline powered generator.