Yes when going out a beer is usually 3 euro or so. There's a few places where it's 5 euro and people complain about the price :) However some places like Ibiza

Yes when going out a beer is usually 3 euro or so. There's a few places where it's 5 euro and people complain about the price :) However some places like Ibiza are super expensive. 15 euro for a beer or 22 for a mix. And yes bottled water is often more expensive in the supermarket than wine or beer too. In a restaurant you can often get tap water for free. Take into account that wages here are much lower than the US though (probably less than half) and lower than nothern europe too.