User summary Handelsherr und Kiepenkerl (Merchant Prince and Pannier Guy) is a supplement for Das Schwarze Auge focusing on the trade in Aventurien. The book contains information on: Currencies and forms of payment Wholesalers and merchant guilds Trading companies Shopkeepers and artisans Peddlers and their wares Customs duties, tolls and taxes Smuggling Trade Fairs Transporting wares over land and sea Trade with the Güldenland Several important places of trade Descriptions of the main trade goods in Aventurien Rules for incorporating trade into the game