If by metro club you mean metro bar (which is a karaoke bar),check the prices before you buy your drink and should you want to pay that much, check your receipt afterwards. If it shows €1.50 per drink less than what you paid , ask why? You may be told its entertainment tax of €1.50 per person. That may well be, but it's per person not per drink. The receipt I was given was for €3 less than what I paid for 2 drinks.I'm sure the taxman would be very interested ! If you want karaoke with decent prices, try 'Memories'. If the 'metro club' is not the 'metro bar' then my comments do not apply.