I love this rack! It is so versatile and saves so much space compared to other marker organizers. If you need to add more you can always get individual trays. But I suggest you get set to begin with! You'll wonder how you could ever have had anything else.
I really love these storage racks to hold my Copic Sketch markers. I originally bought a set of these racks. It is nice that you can buy individual racks as your collection grows. They stack nicely and it is easy to remove the markers from the rack.
I like the look of the see through racks. My only regret is that they aren't bigger !!?? Maybe I have too many Copics !! Very sturdy and love the blue hue to the plastic.