What size do you want? Costco sells a super heavy-duty chrome wire utility shelf unit that measures 18" deep, 6' high, and 4' wide; the cost per unit is about $75 and it can be put together in 15 minutes. They're so strong each shelf is rated for 500 lb. There are six shelves and the heights are adjustable. For a wine rack, you could buy two units and use all the shelves on one set of posts. The 12 shelves would give you enough room to store 5-6 cases of wine.