Mahogany is generally more expensive than black walnut. This is due to several factors, including its rarity, durability, and aesthetic appeal. Mahogany is a premium hardwood that is highly sought after for its rich, reddish-brown color and tight grain pattern. It is often used in high-end furniture, cabinetry, and flooring. Black walnut, while also a premium hardwood, is more abundant and thus less expensive. According to the Hardwood lumber price report from the U.S. Forest Service, the average price per board foot of mahogany is around $7.50, while black walnut is priced at approximately $4.50. This price difference reflects the higher value placed on mahogany in the market.