A bunch is several years worth, I think I could happily scan 100 frames tomorrow. Perhaps 40% B&W, a lot of which I have never proofed, 50% trans and the rest colour neg.
I used to use a Canon 9900F, which was ok for proofing and some screen work, but I was never very happy with it, particularly for printing. I could probably stretch to buying the Epson 700 flatbed, but I'm worried it will be the same story. It seems a shame to shoot MF on a nice camera (Mamiya 6MF, in the last couple of years, transparencies look extraordinary) and then show everyone poor scans.
I'd be quite happy to hire a scanner and then scan myself.