The offer was at least 10 years ago, we weren't renting most of them back then. I gave it as an example because I don't know what the actual evaluation of each

The offer was at least 10 years ago, we weren't renting most of them back then. I gave it as an example because I don't know what the actual evaluation of each apartment is. Santorini boomed the past 5 years I'd say to the point that this year the Government had to cut down Ships from mainland to Santorini because the Island couldn't afford having that many tourists on it. Using your calculations yes it would go for more than 6m euros although you have to calculate the fact that Greece is currently in a very unstable economic state, with heavy property taxes etc, and of course being close to the Middle east tourism can be affected heavily by wars etc. Although again I have no idea what the actual price of any of the apartments would be nowadays.