Muddy key-Some players mistaken this key and think it's used to open the treasure in the basement of Varrock's big bank. Players sell this item for 10k-300k, which is a really bad deal. The real use of a muddy key is to open a treasure in the center of Lava Maze (level 42 protected by a lesser demon). You will obtain a mithril bar, Mithril dagger, Anchovy pizza, uncut ruby, 2 Law runes, 10 chaos runes, 2 death runes, and 50gp. The key will disappear after using it. Muddy key can be obtain in non-members by only chaos dwarf which are in level 37 wilderness(north of bone yard) and level 31 wildness (north west of bandits camp).
Charcoal- Some players mistaken this as a rare object and think it's a special version for a coal. Players sell it for 20-100k. The object is mainly used for member quest such as Legend's Quest, Zorge Flesh Eaters, Digsite Quest, Recipe for Disaster, Fairytale 1: Growing Pains, and Darkness of Hallowvaller. It can be easily obtain by members at the general shop below Birmhaven for 67gp.
Polished Buttons- Also a member's object that are tradable in non-members world. Players may sell it for 5k-100k and remember that this object t has no use for nonmembers. Polished buttons is obtain in members world by pick pocketing H.A.M warriors and is used for quest such as Animal magnetism or used to make with hard leather to make container.
