Ebay offers Refurbished Firman 3200/2900W Recoil Start Inverter Generator for $399.99 (Reg $499.99) after code with free shipping.

Apply Code: JULY4DEALS

Product Description:
The FIRMAN W02981F supplies 3200 starting watts and 2900 running watts.  It's the perfect companion for camping, tailgating or fully powering your 30Amp Motorhome, Travel Trailer or Toy Hauler.  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 9 hours on just 1.8 gallons of gasoline.