Ivory

Ivory is traded by the tusk, 8 kg a tusk, at a base price of 110 gold. Cities that make it sell it cheap; cities that want it pay more.

Ivory is an entry in the Trade goods database.

A city that makes a good sells it at 60% of base; a city that wants it pays 155%; exotic goods carry a further 40%. Prices drift by up to 12% a day, and a buyer's and seller's price differ by 8%.