Hi Andy66, as others have said it depends where you eat and how many courses you have. We paid between 80 and 100 euros for 6 of us ( 4 adults, 2 kids aged 15 and 9) , mainly 2 courses for the adults and 3 for the kids with ice cream etc, soft drinks for the kids and a couple of wines and beers for the grown ups. Thomas's is great value as already mentioned but also Gratsella is very reasonable. We like to eat in lots of different tavernas and the price difference isn't that great we find, but when you work so hard for 50 weeks of the year i try not to scrimp when on holiday and worry about £10 difference here and there.
Hope this helps,
Andy.