FWIW, you're misreading that chart. It shows a wild increase in memory prices, no matter how much you try to cherry pick.

An example might help: in July of last year I bought exactly this 2x32 DDR5 kit for $141: https://www.amazon.com/dp/B0DSR14511

It's showing $999 now, which seems about median for similarly-spec'd memory on Amazon. The cheapest slot-and-capacity-compatible equivalent I can find is around $570, even. So 3-5x increase, at minimum.

It's true that that's a high error bar. It's absolutely not true that the trend is ambiguous.

Can you cherry pick me a $141 kit, please? I mean, it's not an abstract question! I'd buy it from you right now if you had it or could get it, in whatever quantity you can source. No joke.