Get this 3-shelf steel-frame, Zinc-plated Commercial Shelving unit for $28 (normally $56) with free shipping from Home Depot, today 10/19/12 only. The shelves are commercial grade, 24"W x 30"H x 14"D and have a 250 lb. per shelf capacity. I know that this will sell out before the end of the day.
If you buy 4 of them, be sure and use promo code HDFALL10 (case sensitive) to get $10 off your order (works on purchases of $100 or more).