Provisions for breakfast, lunch and snacks, and non-alcoholic drinks for the week will generally cost less than €150-200 per person. Beer and greek wine are also very affordable.
Dinners can vary depending on the islands. A fantastic, multi-course dinner with house wine on a typical island can be €15-30 per person. On internationally famous islands such as Mykonos, the prices can be double that.
Based on feedback from normal trips, passengers spend about €250-500 per person per week. That includes all food/drink related expenses.