That's gamble problem in general. I won't blame the game much on this matter. Heck I play DBZ dokkan battle and it exactly like you said about FGO. Bamco is infamous for their money hungry attitude. 79.99 usd worth 2 multis? definitely no for me. (It doesn't even guarantee shit)Yet I still play because I love DBZ franchise very much. Although I convert back to be F2P for recent craps they pulled which made me judge them as 'not worthy of money'