As much as I want this, on OSRS it actually costs money to clean your herbs and put them in pots. I think we should get rid of the current exchange shop (clean herb + vial of water for unfinished pot) and have an npc that can automatically and instantly clean your grimy herbs, put them in vials of water (but keep these services separate, e.g. you don't want to make torstol potions (unf)) as well as crush items for you, all for a small fee of maybe 250-500 gp per herb or item.