Tanning cowhide

⚠ This profit comes from buying, processing, and reselling on the Grand Exchange. It assumes large GE volume and can be inflated or volatile — treat it as a theoretical ceiling.

Leather and hard leather are used to train Crafting, especially in free-to-play, and have a reasonable volume. Cowhide can be tanned at a tanner to turn it into one of those products. Each cowhide costs 3 coins each to turn into hard leathe…