Peach wood is generally more expensive than cow horn. This is due to several factors, including the rarity of peach wood, its aesthetic appeal, and its versatility in various applications.

Peach wood is a highly sought-after material in the woodworking industry. It is known for its rich, warm color and fine grain, which makes it ideal for furniture, musical instruments, and decorative items. The scarcity of high-quality peach wood, which is typically sourced from the peach tree's heartwood, contributes to its higher price. Additionally, the process of harvesting and processing peach wood requires skilled labor, further increasing its cost.

On the other hand, cow horn is a byproduct of the meat industry and is more readily available. While it is used in various applications, such as handles for knives and tools, and as a material for certain musical instruments, it is not as prized as peach wood. The demand for cow horn is generally lower, and it is often more affordable due to its abundance and the lower cost of processing.

According to a report by the Wood Products Council, the average price per board foot of high-quality peach wood can range from $5 to $10, depending on the thickness and grade. In contrast, cow horn is typically priced at around $1 to $3 per pound, which is significantly lower. These prices reflect the differences in rarity, aesthetic value, and processing requirements for each material.

Furthermore, the cultural significance of peach wood in certain regions can also contribute to its higher price. In China, for example, peach wood is considered auspicious and is often used in traditional craftsmanship and art. This cultural value adds an additional layer of expense to the material.

In conclusion, peach wood is generally more expensive than cow horn due to its rarity, aesthetic appeal, and cultural significance. The lower cost of cow horn, which is a byproduct of the meat industry, makes it a more affordable option for certain applications.