Dark Sun: The Tyrant of Tyr
The Tarnished Cup buys and sells previously owned goods of all sorts. Musical instruments, jewelry, and clothing; even an occasional howdah or chariot can be found here. Prices generally range from half- to full-book value, depending on quality. The Tarnished Cup also purchases goods at a tenth to a quarter of book value.
The proprietor, a tiefling named Gavan Sul, is rumored to deal in devil grass, a pernicious scrub weed that is the basis for a potent poison. He is also rumored to have ties to the black market and can help buyers locate hard-to-find items for a fee, usually a tenth of the item’s value.