People have covered most of the reasons, but I'll also add that the hobby never really recovered from COVID, in terms of prices. Manufacturing in China and international shipping went up quite a bit during and post-COVID, and those are both big cost contributors to this particular hobby. The USD to JPY conversion is good if you're using USD, but it's still not enough to make up for the increased cost in production.
If you're just getting in, unfortunately you're jumping in at the most expensive time, possibly ever, even adjusted for inflation. I know I've scaled back my Macross collecting for a variety of reasons, price being a big one. It's hard to pay the new prices knowing what I used to pay.