It depends. Usually on a night out (I too am a sticker, if the tunes are fine I will dance until they haul me out) I'll spend maybe £20-30. There's a lot of students bars around here with good deals, and a few of the clubs do double vodka and dash for £2. Good times.

If it's a cocktail night, it'll probably be more. I'm not sure about how much time I spend doing it. I have weeks when I'm out four nights, or weeks where I'm out just one. It depends on how available the crew are.