I have never been, but my parents just toured in July with Globus tours. They have been on about 8 different European tours now and they remarked that this was by far the most expensive....significantly more than say England, Germany, France, Italy... For example, they paid $30-35 for a grilled cheese sandwich and pickle. They said that this was not indicative of one particular dinner, but the country as a whole. McDonald's was just as expensive!
They had a great time, and I'm totally envious of you:tongue_smilie: (just do your research ahead of time and plan on budgeting a fair sum for your trip)
Enjoy!