Morrigan's throwing axe

High alchemy turns Morrigan's throwing axe into 2,400 gp. Buying one at 20,000 gp (its guide price, as it has not traded today) and casting with a nature rune at 138 gp costs 20,138 gp. That is a loss of 17,738 gp per cast at its guide price, so it is not worth alching for profit right now.