Cost of life in Dublin

The price of restaurants in Dublin is really high and the quality of food is really bad, at least if compare to Italy. It doesn't make sense to spend such a lot of money to eat chicken or potatoes. I don't know how's going this country...they are in recession, the number of unemployed people is getting high, but the shops and the restaurants don't want to cut the price. I realize last week end when I was in Venice how much cheaper are the price over there, I went to panorama supermarket in Marghera, I bought many items and I was amazed to have spent only 13 eur, in this fucking tesco at Stillorgan I would have spend for the same things at least 20 eur.
I mean...pay attention when you hear about salary in Ireland, even if it's true that the taxes are lower the cost of life is so fucking expansive over here...and you have to bear on mind that you don't have extra monthly salary like 13th or 14th and you don't even have TFR. You have to pay for your food at work, when in Italy you have ticket restaurants or free canteen. And, last but non least you have to apply for your schema pension, and it means another deduction of 3 to 4 % by your gross salary.