Hi again Rostan1, I thought I would add some more information.
I am sure that Rod Heikell and Lucinda Michell won't mind me reproducing their Charge Bands since I am accrediting their book as the source "Mediterranean Almanac 2011-12" as I think it will give you a useful starting point.
1. No Charge
2. Low Cost under 25 Euros
3. Medium cost 26 - 40 Euros
4. High Cost 41 - 55 Euros
5. Very High Cost 55 - 70 Euros
6 Highest cost over 70 Euros
So far The Balearics, South of France
during high season, most seem to be at the higher end of these rates. However, during high season, it doesn't really matter anyway, berths are in very short supply and we have spent most of the time since late June at anchor
, which suits us just fine.