In Pathfinder, magic is common enough that either your village or the next will have a healer capable of that powerful of a heal spell. The only catch is that the casting costs about a year’s worth of wages for a peasant
They should have swapped a couple of the conch rewards, so you get a flimsy hammer at 60 and the true ending at 48. Pushing your players into an extra 5 hours of searching just kills the game’s pacing