DeWALT DCV580 18/20V MAX Cordless Wet-Dry Vacuum for $79.00 shipped. Here is a screenshot for reference. This Dewalt(R) 18-Volt/20-Volt Cordless Wet/Dry Vac has a cordless operation powered by either an 18V or 20V battery. It also has a washable/reusable filter, 5′ crush-resistant, hose and an on-board accessories and hose storage with a 2-gallon tank capacity. Most places have it for about $120.