The ripping off of tourists is not just a phenomenon found in Greece. These types of things happen all over the world. In NYC, taxi cabs would routinely overcharge tourists especially from the airports. That is why they were forced to adopt fixed pricing. There was an article in the paper how some food vendors charged tourists $30 for a hotdog and coke. These things happen everywhere. I was in Rome talking to the owner of this boutique hotel I had stayed at. The minute it was time to leave, he said that he would hail me a cab (of course he couldn't help me with my bags because he has a bad back but that's another story). As I was walking to the cab, I heard him go up to the taxi driver and tell him we were Americans for no reason. There are always going to be those who look at tourists as easy pickings.