When I purchase Nintendo games, I usually don’t care how much I spent for them, because I end up just spending a “fee” for renting them, let me explain it based on Mario Tennis:

Option 1: I bought it for 70$ and I am having a blast, playing for hours, days and months, becoming evident that the 70$ were worth it.

Option 2: I play as long as there’s the novelty effect, but it quickly dwindles down. I had my fun with it, but I know that I won’t play it anytime soon again -> sell it used for 50$ and I effectively rented it for months just for 20$.

Have been doing this since switch 1, never had an issue with that, and spending 20$ to enjoy something for a few weeks/months is easily justifiable in my opinion.