Even if they aren’t willing to make it free they could reduce the cost greatly. Full respec shouldn’t cost more than 1 mil at max level. Alternatively, maybe a weekly item you can obtain IN GAME (NOT SHOP) that gives you a fresh reset for free. That way it can’t be used to radically change builds 5 times in a single dungeon if they’re really against that.
Could also give us a potion from the alchemy person “reduces cost by 90% to respec”