Walmart offers the Edsal 48" 5-Shelf Steel Shelving Unit in Black, model no. UR245L-BLK, for $48.51. Opt for free in-store pickup to dodge the $4.97 shipping fee. (Alternately, pad your order over $50 to qualify for free shipping.) That's $10 below our October mention and the lowest price we've seen. (It's currently $10 below the lowest total price we could find for a shipped unit.) It measures 48" x 24" x 72" and features adjustable shelves and a 4,000-lb. total capacity.