In the page with the detailed description of a holiday you can find information on what is included and what is not included in the displayed price. In addition there is a rough indication of the extra costs and the range in which they can fluctuate.
Generally, the price is per person and includes skipper, boat and final cleaning. The cost of fuel, stops in the ports and food and drinks for onboard consumption are extra costs to be incurred during the holiday. Generally, members of the crew create a "petty cash" (the skipper is excluded).
Other costs such as the travel to/from the port of embarkation/disembarkation and possible travel or accident insurance are generally excluded from the displayed price and participants individually bear these costs.
For further information about the costs you are advised to contact the skipper. He will be able to provide all the information you need. You can do it by clicking on the red button you find on the right side of the page.