Agree with others that length/price ratio doesn't really reflect how much I enjoy a game.

If I like it, I like it. The hours are irrelevant to me. I can get just as much enjoyment out of a six hour game with zero replayability as I can with a dozens-of-hours-long replayable RPG. It's the experience, not the time.

Also, with Game Pass and the fact that I buy everything on sale, there's no real good answer if I did approach it that way.

That said, the only two games I've bought at full price in the last decade or so were Breath of the Wild and Spider-Man PS4.

Massively fun and I didn't feel like I had wasted any money.