Aluminum heads $ per HP?

Aluminum dissipates heat and all things being equal will produce less hp than the iron pieces at .480 or .490 lift cams.So refreshing or bolting on useable stock iron heads will make more hp save hundreds.Now if those iron heads you bought need $1000 to refresh your probably still hundreds ahead of the game until you need extensive work to take advantage of a large cam...then it gets cloudy.Aluminum ring out $2000 plus in this area.