Ebay offers Refurbished Firman Generators 2,000W / 1,600W Recoil Start Inverter Generator for $249.99 (reg $349.99) with free shipping.

Product Description:
The FIRMAN W01682F supplies 2000 starting watts and 1600 running watts.  It's the perfect companion for camping, tailgating or for charging the batteries in your RV.  Parallel ports make it possible to connect this inverter with any other FIRMAN inverter so that their power may be combined.  The included 30Amp outlet makes connection to an RV simple and easy.  Run time is an impressive 10 hours on just .9 gallons of gasoline.