Here is the point of view of a player/owner ("non-collector") who is in the market for an MM, especially one that is close to me
I have only played MM a few times and initially thought it was overrated BUT I would like to have one in my home to see if more play time would change my mind and from that perspective this pin seems "over-priced" as far a purchase (I have nothing I would consider trading). For that amount of $$ I want plug and play and pretty much flawless, not something I have have to fuss with right off the bat (even minor stuff) so a new machine (yes I know they can have issues) for similar price is just more appealing.
I agree that an original may hold, or increase, in value within a smaller segment inside the pinball community but IMO the addition of MMr meets the needs/wants of a larger group(like me). Higher priced original means smaller group equals longer on the market waiting for "that guy".
I think the market of people paying top dollar, doing a restoration and then asking 5 figures for a tidy profit is going to take a dip ... it may return as the market saturates with MMr.
All that said you may be spot on with price ..Good luck with the sale

I think the comparison the AC cobra is pretty close ... but like MM there are two markets ... one with a few people with the financially resources to own an original and a second market with a LOT more folks who can't afford the original (or the upkeep) and are happy to have a copy with all the modern comforts