This Sportsman 4,000 Peak-Watt Dual Fuel Generator listed at $529, but you can get it for $249 during the Spring Black Friday sale at HomeDepot.com. Shipping is free, and that's the best price we can find anywhere. The generator reaches 3,500 running watts and 4,000 surge watts, and it has a maximum run time of 10 hours at half load. Hook up with four 120V outlets, one 120V RV outlet, and one 12V DC outlet. Sales tax is charged in most states.