I don't know if this is a thing, but I feel like it used to cost about 540k for my 4* Ankyo and since then I've upgraded some other girls to 3* and gotten some new girls. Now Ankyo's 4* is over $1 million. Is that a thing? Going to upgrade a few more to 3* and see what happens.

I'm frustrated with the cash system as well. I'm constantly out of cash. The game got very cash grindy since the patch. I like most of the changes, but not the cash scaling cause they didn't scale what each girl pays out.