True, right now they are trying to milk masked man and jonin minato before they decrease the price by a little bit.

Yes, you can get a few frags of so called rare ninjas in events but you will behind in refines and other power related items.

The point is, as a f2p, you are not supposed to get it. It is exclusive to payers. Yes, you are able to save 10-15k coupons for jonin, obito, or hidan but you are still behind power.