Home Depot offers the Generac 3100 PSI 2.7-GPM Gas Pressure Washer, model no. 6598, for $339.15 with free shipping. That's the lowest total price we could find by $60. It features low-oil shutdown, an axial cam pump, integrated spray gun holder, two .75-gallon detergent tanks, a 30-foot hose, and five nozzle tips.