Pern's basic unit of currency is the mark. Coins are made of wood, produced by each Craft, and produced in denominations of 1/32, 1/16, 1/8, ¼, ½, 1, 2, 5, and 10 marks, with a few 100-mark coins for large transactions. According to the Dragonlover's Guide to Pern, prices are set in an annual meeting of Lords Holder, Craftmasters, and Weyrleaders, yet haggling is also a common practice.