The Poisoned Apple Apothecary carries the usual potions ingredients at a much cheaper price than in Diagon Alley. The reason for this is because not many people come here. Which is good since this apothecary also carries certain ingredients that wouldn't be available to those who refuse to set foot in Knockturn Alley. Some of these ingredients aren't found legally in the market, and only certain witches and wizards would know how to acquire these ingredients from the shopkeeper. The apothecary is a small shop that is tight and doesn't have a lot of space to move around in. It's dark and has a faint smell of mold and rotting fruit. Not a very pleasant place to be in at all.
