Could you provide me with some insights and an appraisal value for the website epicyachtclub .org?

There are different options available, such as greatyachtclub.com which is currently unregistered. The niche market is quite small, and I can't identify any potential end-users for this domain.

However, if you consider a domain like maineyachtclub.com, it is specific to a particular location, Maine. While the geography is limited, it's more aligned with what prospective buyers in the area would be interested in. A yacht club located in Maine would be a much more suitable option for someone looking to buy a domain in that specific niche.