Corrupted Volatile Nightmare staff

High alchemy turns Corrupted Volatile Nightmare staff into 150,000 gp. Buying one at 1,000,000 gp (its guide price, as it has not traded today) and casting with a nature rune at 138 gp costs 1,000,138 gp. That is a loss of 850,138 gp per cast at its guide price, so it is not worth alching for profit right now.