Here is another adjustable dumbbell that can replace 9 weights. The Stamina X Versa Bell Dumbbell is adjustable from 10 to 50lbs (10, 15, 20, 25, 30, 35, 40, 45, 50). It comes with the müüv app to help you get more out of them. These dumbbells have an easy-view window to show weight change as you turn the dial.
You get a heavy duty nylon weight tray with your purchase in addition to painted steel weight plates.