5-Shelf Plastic Shelving Unit at Staples for $22.99 (price good until 10/7/17).
32"x14"x72". Description says it’s a medium duty unit but has the same 750lbs capacity as 32"x18"x72" heavy-duty unit at Costco sold for $29
https://www.staples.com/5-Shelf-A…ct_2707986