When did these get so expensive?

I was looking through my collection a few years and saw that I had these two masks. I remember that I bought them in ~2019-2020 for a collection I was trying to complete. I checked their price online in ~2024 and saw that each of them was worth ~50 dollars. I don’t exactly remember buying the masks and how much I paid for them, but I can’t imagine that I’d spend that much on not just one, but two of them. Did they only get that expensive in the past few years? Because I’m guessing they...