I have four of these racks from Sam's Club and you can't beat them for the price vs. capacity. One caution for all who intend to buy one. They work great for standard Bordeaux bottles, not so good for Burgundy bottles nor the type of bottle that is sort of Bordeaux shaped but has a smaller diameter at the base than it does at the shoulder. This is because there are three wire "semi-circular loops" into which a bottle is to lie. A Bordeaux bottle contacts all three, a Burgundy only two. I have had two fatalities from bottles sliding off the stack. As a fix, I have ressorted to placing a layer of small bubble wrap between the layers of bottles for additional friction.
I am not saying that they should not be purchased. Just be careful with them and the type of bottles that you use.