Not my auction but from buy.com/rakuten. Have 4 of these in the garage from the last sale about a year ago and am picking up some more. The casters are great for moving stuff around and the shelves can take a decent amount of weight. If you're tight on space you can stack these right next to each other and pull out just the one that has the stuff you need.
NEW Alera® Complete Wire Shelving Unit w/Caster, 4-Shelf, 48w x 18d x 72h
NEW Alera® Complete Wire Shelving Unit w/Caster, 4-Shelf, 48w x 18d x 72h