Lucky for me - I've been around pins all my life, and I've played 80% of the late 60's, 70's and 80's pins. I did "inherit" 30 or so machines from the "old days" and I restored and sold around 20. I used to buy them off eBay (when they were cheap) and by word of mouth. I don't really care what the title is - although I do "target" machines I used to play. I still have a lond "wants list" - and that is reviewed every time I find a machine.
I was never really into DMDs, but I still enjoy working on them and of course, playing them.
These days - "word of mouth" usually lands a few titles every year, and I'm "sitting on" quite a few that I will "one day" buy. I have not bought an eBay pin for 5-6 years.