yeah there's permanent hero scrolls from quests, and also regular hero scrolls which have a chance of permanent heros.
but really using the peso to hire your hero isnt that bad, also with the new UI you can hire 10 hrs at once. and thats 10 hrs of actually being in a battle, not in lobbies or offline etc. so its not really that big of a deal. im a high rank and i hire some of my heros and it doesnt bother me at all.
