For the minions it goes all the way up to 9 for the last 3, so 11.) 12.) 13.) all cost 9 medals each. I finally got all the minions right now I'm working on getting the weapons, even though I don't want them all, and because you get achievements for recieving the weapons and they're automatically store-able inside the Armoire I don't mind it.... but meh. I was just hoping the minions were the ones w/ achievements... but I guess not.