for some reason unknown to me, whenever you go to a venue in amsterdam, on top of the booking fee for buying tickets in advance, you have to pay an extra charge to be a 'member' of said venue.

you can either buy this on a monthly basis - the three euro charge - or annually - the eighteen euro charge.

so if you go to the paradiso a lot, it's worth buying an annual pass, or if you're just going for the night (or the two nights for the legendary) just pay the three euros.

if you are going to the two nights, you'll only have to pay the three euros once.

hope this clears it all up!