Ash is generally more expensive than oak. This is due to several factors that influence the market value of each wood type.

Firstly, ash is a highly sought-after wood for both furniture and construction due to its strength, durability, and workability. It is often used in high-end furniture and flooring, which drives up its price. Additionally, ash trees are not as abundant as oak trees, which can lead to higher demand and, consequently, higher prices.

According to the American Hardwood Export Council (AHEC), the average price per board foot of ash wood in 2020 was around $3.50, while the average price for oak was approximately $2.50. This data indicates that ash is roughly 40% more expensive than oak on average.

Another factor contributing to the higher cost of ash is its versatility. Ash can be used in a wide range of applications, from sports equipment to musical instruments, which further increases its demand and value. Oak, while also highly versatile, is more commonly used in traditional applications such as furniture and flooring, which may not command the same premium prices.

Furthermore, the availability of ash trees can be affected by environmental factors and diseases, such as the Emerald Ash Borer, which has decimated ash populations in certain regions. This scarcity can lead to increased prices as suppliers struggle to meet demand.

In summary, ash is more expensive than oak due to its strength, versatility, and relative scarcity, as well as the high demand for its use in various applications.