Keychron K4v2, put some LSA Keychron Developer caps on it. Required a little modification to shave down the stabs but I like the look, now I just need to fix the sound since the reduced mass of the cap leaves some snap back ping on larger keys.
expensive is relative, but yes they are not a consumer product, they are however much less expensive than many broadcast router control panels, because as we know switches (buttons) cost $$$$.
yeah I don't recommend buying anything AV/Broadcast for personal use. If you need it for work then get work to pay for it (even if you just run it through a personal LLC)