The cost of a wooden practice sword, also known as a bokken, can vary depending on factors such as the quality of craftsmanship, the type of wood used, and the seller or retailer. Here are some general price ranges to give you an idea:

1. Basic Wooden Bokken: A simple and standard-quality wooden practice sword made from common woods like oak or ash can cost anywhere from $20 to $50 USD.
2. Mid-range Bokken: A higher-quality wooden bokken made from more durable and exotic woods like hickory or red oak may range from $50 to $100 USD.
3. Premium Bokken: Exceptional-quality bokken crafted from rare or specialty woods, meticulously shaped and finished, can cost $100 USD or more.

It's important to note that these prices are approximate and can vary based on factors like the retailer, brand, craftsmanship, and any additional features or customization. Custom-made bokken or those with special engravings or designs may also have higher price points.

When purchasing a wooden practice sword, it's advisable to research reputable sellers or martial arts supply stores that offer reliable products. Comparing prices, reading customer reviews, and considering the overall quality and reputation of the seller can help you make an informed decision.