I think to some extent the monies factor in, but for me more than anything it's amount of plays & finite space.
Let's say $5500 for a NIB Stern or a ____ W/B. unless it's a must have all timer W/B, I've probably played it 10,000 and don't really need keep playing enough to justify it.
But yeah you could totally see how with the older titles still climbing in cost you have to weigh the options. eXpecially since now we're getting like weird titles being a shit ton of cash.

EDIT: I can buy a Stern, play the shit out of it for a year or more, sell it at almost no loss and buy another NIB. Very hard to argue against that

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Misread