I wanted to until I saw the price.
Discussion
It’s not that bad if you’ve got all the pis just chilling. I’ve got three nodes with heads and they cost me a lot more then this option considering I’m running them headless.
I was (and still am) looking to rack 20 pis. I'd need a few of them.
20? That’s a lot. I take it you can’t or don’t want to use standoffs?
Here's what I've got right now in the rack.

It's a pain shutting everything off to work on a pi in the middle of the row. It's also a bit of a mess.
That’s a hell of a stack of pi’s.
Quite the set up. Makes me jelly.
I’ve got 2 pi’s like this, 1 setup with longfi and several others just lying around. 