I'm sure you understood that "the closest I come to claustrophobia" is relative. I don't actually come close to claustrophobia at all. I'm quite comfortable in small spaces despite being 1.98 m tall. It's really just a matter of wanting an unsegmented workspace in the kitchen where space is at a greater premium than my other workspaces, such as my lab.
I'm glad it works for you. As for its value at $155, I think I would charge something similar. I like working with red oak, but it can get expensive. I made one of my cabinet shelves, the most used shelf in the kitchen, from red oak over twenty years ago. It still looks like I just installed it. So I know what you have there will probably serve you for many years.
RN,
1,98 m....not even Stephen Curry is that tall.

Anyway, I was very specific with Glen, who was Robin Williams' personal Master wood craftsman, btw.
I requested a board that will withstand warping, has a coating which seals the wood and is sturdy enough to be used for commercial, rough every day use.
Glen delivered. This board is heavy, high quality and much more than I have hoped for.
At $155, it is definitely not too much, imho.