Walmart offers the Shop-Vac 5-Gallon Wet / Dry Vacuum, model no. 2035527, for $19.97. Choose in-store pickup to dodge the $4.97 shipping charge. That's $20 off list and the lowest price we've ever seen for a 5-gallon Shop-Vac. (It's also a current low for any Shop-Vac 5-gallon model by $15.) It features a 2-horsepower motor, three extension wands, and reusable filter. Deal ends November 29.