The med. is big - in prices-differences. In Croatia I pay for my docking place per year 11.000€, for daily docking between 75€ to 100€. But you can drop your anchor at no costs nearly everywhere. The yearly permits are around 500€. Craning, painting, motor-service, lines, sails
, repairs, etc. make around 3.000-5.000€ a year.
Same prices are in Italy, eastcoast (Adria).
Food-prices, Restaurants etc. are in Croatia and Italy the same like they are in Austria or Germany
In Greece (Ionoc sea), I pay in Marina´s between 40 and 85 € per day, a yearly docking space for a Lagoon410 ist around 6.000€. In harbours, you pay between zero to 10 € per day. The prices go down, the more your going east (Ägäis)
If you go to Turkey, prices again go down 50% compared to Greece.
Same ist for Tunesia, Cyprus
Really expensive gets everything in France (Riviera).
In general, you can say the more south and east you go, so more priceworthy everything gets.
(including Mallorca), all of France, parts
of Italy (westcost Riviera) are the most expensive places.