So I was wondering, are there any must get items in the cash shop? Like I know there's the exp boosting stuff, and those 90 day buffs, and inventory, but just how much extra convince do they really give? Also, if I really should get some of them, how many of each should I get and how much would it end up costing me?
As long as you don't hoard items then you don't need inventory space. The only item that may or may not be worth getting (when you're in need of them) are the buttons. (In my opinion of course), and that's only if you have a high lvl weapon that would be worth +100ing.