These costs are calculated based on buying the unfinished potion pre-made. This allows you to skip putting clean torstols in a vial of water. This method is less expensive than putting clean torstols into a vial of water. The extra profit accumulated via this method is -123 per potion. The experience per hour from buying Torstol potion (unf) is double the experience per hour from buying Clean torstol.
The profit for making an unfinished torstol potion using either a vial of water or filling your own vial is as follows: