Oil楠木 is generally more expensive than White Ash wood. This is due to several factors, including the rarity and unique characteristics of Oil楠木, as well as its demand in high-end furniture and construction markets.

Oil楠木, also known as Chinese Elm or Chinese Mahogany, is a highly sought-after wood species known for its rich, dark reddish-brown color and tight grain pattern. It is native to China and is considered a luxury material due to its limited availability. The wood is highly durable and has excellent workability, making it a favorite among artisans and craftsmen. Its rarity and the difficulty in sourcing it contribute to its higher price point.

On the other hand, White Ash wood is a more common species found in North America and Europe. It is known for its strength, flexibility, and ease of workability. While it is used in a variety of applications, including furniture, flooring, and construction, it is not as rare or prestigious as Oil楠木. This makes it more accessible and, consequently, less expensive.

According to the U.S. Forest Service, the average price per board foot for Oil楠木 can range from $8 to $15, depending on the grade and quality. In contrast, the average price per board foot for White Ash wood is around $2 to $4. These figures highlight the significant price difference between the two woods.

Furthermore, the demand for Oil楠木 in the high-end furniture and construction markets also drives up its price. Consumers and builders are willing to pay a premium for the unique aesthetic and durability that Oil楠木 offers. This demand is not as strong for White Ash wood, which is more commonly used in everyday applications.

In conclusion, Oil楠木 is more expensive than White Ash wood due to its rarity, unique characteristics, and demand in high-end markets. The price difference is evident in the average cost per board foot, with Oil楠木 being significantly more expensive.