Really nice work!
There's one detail that hinder the experience: buttons don't extend to the frame there in and only the text is clickable. They are kinda small already but they are even smaller than they look.
I'm not proficient in python/renpy, therefore I don't know what you're working with, I tried doing something like and seems to fix the issue for the sell all button of the cargo:
Nothing that can't be fix with a big find & replace
Good luck and Happy holidays!