I feel like high end bike service in general is a tough sell unless you have a huge local club-ride community of people whose time is extremely valuable.

I know someone who operated a Velofix van for a few years, and I used it a few times, but the minimum cost was basically $100+. For that much coin, I would just walk my bike home or take it on the bus. Particularly if it was something like a flat tire where I know I can fix it myself at home for a few dollars.