Yeah, I am not saying the moment you finish making 10 potions, you give them all to him and he automatically puts them in the shop - but the shopkeeper could charge a bit higher for the more difficult potions so you may still have to make them from time to time if you're low on funds. This way it could free you up resource-wise not to spam basic potion crafting and let you focus on creating harder potions and looking for those more specific resources. It's only a thought - if you want to do it, fine if not, that's okay :) I was just curious about that feature.