Blighted overload (1)

High alchemy turns Blighted overload (1) into 30 gp. Buying one at 3,396 gp (its guide price, as it has not traded today) and casting with a nature rune at 138 gp costs 3,534 gp. That is a loss of 3,504 gp per cast at its guide price, so it is not worth alching for profit right now.