Hairstyles aren't really cosmetics, they're one of the most fundamental aspects of character appearance. It's why the game has 4 faces but like 50 hairstyles, hair is incredibly important for how a video game character looks. They shouldn't be locked behind savage or ultimate, and haven't been until now.

Also casual players don't have 50 million gil, so it being on the market board is irrelevant. It doesn't seem likely that it's going to be 100k any time soon.