High alch profit

Also called alching, high level alchemy

A spell that turns an item into a fixed amount of coins. It profits when the item costs less than that, minus the nature rune. The best high alch right now is Noble robe top (red): it alchs for 30,000 gp, costs 491 gp to buy plus 137 gp for the nature rune, and leaves 29,372 gp per cast.

Live example, refreshed every few minutes