Home Depot offers the HDX 3-Shelf Steel Wire Shelving Unit in Black or Chrome for $19.97. (Target has a similar unit for the same price with in-store pickup.) Choose in-store pickup to avoid the $2.49 shipping fee. That's tied with our February mention as the lowest price we've seen for a 3-tier steel wire storage unit. (It's the best deal now by $6.) It measures approximately 30" x 24" x 14" and has a weight capacity of 250 lbs. per shelf.
Update: Chrome is now a buck more.