So i've noticed that and i leads to a shop where you can buy Echo Shoes for 80 coins, Enn's Wig for 300 coins, PFSC (tradeable) for 2 coins, unrestricted dungeon pass for 15 coins, Gleaming wing box for 400 coins and Enn's Clothing Box for 150 coins.
My question branches in two routes:
Are these coins related to cash? (can only be ontained with cash): If yes ten the argument ends
Non-cash?: If yes, then the next question would be, how to get them?