I was shocked by the price at first, since it looked just like a simple panel but I changed my mind after I saw it on my own eyes.
It is very precisely made, with nice finish and labels, it comes with all the bolts and distance washers. Glass snaps perfectly into the hole so it's not even necessary to glue it.
You wouldn't be able to make it cheaper by yourself, at least not in this quality. Since you also have to figure out how to make the whole enclosure for MBP25 pedals, it's really nice to have this complicated little piece solved already.