They are over priced for me.
Why pay 7-8k for a beat MM when I can get a new one that will have a better color dmd in it? Why pay 7 for an IJ that while fully featured, is starting to show its age in the game play department. Modern games have more interesting rulesets at this point. I like older games. Each era has its own feel, but I can get my williams fix for half what the a titles go for.
Now, that said I have considered buying newer titles but since I have space for 40 machines or more I am happy to find lower priced ones to fill my slots. If I were limited to 10 games I'd probably already bumped up to a few of the most recent titles.