This is a pic of my db rack. Its made by Reebok; I got it at Target a little over a year ago. I think it was $30 but maybe closer to $40. Hubby put it together for me and was very impressed with its construction and design.
I got him to paint the hex dumbbells different colors for me so I can more easily tell them apart. {I have vision problems}. It will hold around 8-9 sets depending on the size of DB. Mine range from 3's to 25's. The rack is about 2 feet long and 21inch high.
The only problem I've had it that I will occasionally pinch my finger between the rack and a db if I'm not careful. Especially cleaning up after a workout when my arms are fried, anyway. HTH