https://smallformfactor.net/forum/threads/sentry-2-0-evolution-of-console-sized-gaming-pc-case.7106/page-19#post-138872
Found a price post on SFFF. 230€
Unfortunately, that's almost double what I would be willing to pay for a case (≤ 150€). I know it is an investment and, knowing myself, I might never use another case since this is as compact at it will get but not until I have money to spare (yes I understand this is limited and more like a useful premium collection item) but still it's amazingly practical and I would love to have it :/ Guess I will struggle another year searching for the best case on SFFF. Maybe there will one day be one with dust filters even :)