Walmart offers the Stanley SL18301-4B 4-Gallon Stainless Steel Wet/Dry Vacuum, model no. 8210413, for $23.97. Choose in-store pickup to avoid the $5.97 shipping fee. That's tied with our mention from a week ago, $6 off, and the lowest price we could find. It features a 3HP motor, rear blower port, accessory storage casters, 4-foot hose, three extension wands, floor nozzle, reusable dry filter, and foam filter.