The Algari Potion Cauldron’s tooltip says it has 80 charges. It does not. It has 40 charges. Considering this item takes 80 vials to make, the 80 charges makes sense. The 40 charges means this is not an efficient route to supply a guild with potions for a night.
Either drop the required crafting mats to 40 or give us the 80 charges the tooltip says we should be getting.