Quoted from Chet:The IM Monger is a very well designed mechanism for a pinball machine. I don't believe they have done anything like that since.
That's so funny as IM was downplayed at the time because it was cheap stripped down game, I think maybe it was also due to peg legs and plastic apron and new latch lock and other things, but it has to have about the same BOM as AcDc or Tron or TWD or ST pro.
Heck Tron comes with a $10 (looking) arcade placeholder and AcDc has a plastic covered cannon (which looks like it would cost $4 for the plastic cover). I don't see any of those type of cheap-o things on IM and while Met pro seems to be the poster boy for a full value pro in this day and age it has zero spinners compared to 3 spinners on IM. Not saying that spinners are expensive but you have to wonder why Stern removed them from the pro and didn't even put them in the Met LED pro (where they upgraded the bell on AcDc led pro)