Home Depot offers the Sportsman 4,000-watt Portable Gas Generator for $279 with free shipping. That's the lowest price we could find by $42, although we saw it for $80 less in November. It features 3,500 running watts (4,000 peak watts), four 120-volt outlets, an RV outlet, 10-hour runtime, and 3.6-gallon tank. Deal ends July 29.