There are a variety of factors that establish a price for a gulet charter. From the number of persons, to the amenities, the menu, as well as the quality of accommodation and itinerary. What needs to be established first is how much you can allocate for your holiday. What your budget is. From there an agent can determine and shortlist gulet charter offers that near match your criteria. As for itineraries and traveling to the Greek Islands, one of the most popular embarkation points is the harbor of Bodrum. The only other cost, outside of the standard costs, would be that you would have to pay Greek harbor fees - whereas in Turkey you don't as it is included in the price of your gulet rental. So to sum it up, first a budget and then the details such as how many in your group and then additional requirements. Other costs in addition to the rental price of your gulet charter would be land excursions, water sport activities such as jet skis, water skis, etc.; a special menu requirement and so on. The best thing is to simply discuss it with a professional and a knowledgeable charter agent.