This may just be me (or maybe London/UK-related), but in my experience restaurants/bars that list prices as just "7" are generally more up-market (or want to be

This may just be me (or maybe London/UK-related), but in my experience restaurants/bars that list prices as just "7" are generally more up-market (or want to be), and having that connection in my mind I tend to pay more attention to costs when I see it like that, as I'm already expecting a not-tiny bill before I even start thinking about the prices themselves.