Alera Ale SW604818BA Complete Wire Shelving Unit with Casters (Black Anthracite) for $59.99 shipped.  Here is a screenshot for your reference. The shelving unit is made of welded wire, feaurse a 1000-lb. total weight capacity, adjustable shelves in 1" increments, and measurs 48"W x 18"D x 72"H. Most places have it for about $78.