Expensive? Yes.
But also great? Yes.
I do wish these things were a bit cheaper, but they are excellent for what they are. I would also recommend getting some sticky felt strips to apply to the tops before storing keyboards on them (so your metal boards don't get scratched).
I only have a two-keyboard rotation at the moment, so I bought the single stand to display the one I'm not using at any given moment. It looks quite nice!
Decent stand, not suitable for tall keyboards + tall keycaps, adhesive strip poor
Got the triple version, good for space saving, price is okay, acrylic is good, not exceptional. The 2 issues I've got with it are also echoed from other reviews. First is the cutout is not big enough for tall keyboards + tall keycaps (MT3/SA) - the bottom row got squished badly so you can't slide the keyboards all the way. Second is the adhesive strip - too short and not sticky enough so it doesn't cover the entire cutout and just keep peeling itself off the stand.
The stand is good looking and very easy to put together. It does a pretty good job of displaying your keyboards and is a decent value as well.
Only 2 problems with it: tall keyboards or keyboards with taller (MT3, SA) keycaps have their keys pressed by the front lip of the stand, and the package doesn't include enough of the adhesive backed protective film for the triple stand. You have to cut that film down into tiny pieces to have enough, the triple keyboard stand should probably include twice as much as it does.
Cons:
Conclusion: Shop around and see if you can find a better deal