Only lap dancing bar I have been to is Golden Dolls on Potsdamer strasse.
It is pretty expensive for what you get.
10 euro entrance , 15 at weekend.
There are normally lots of stunning girls and almost constantly one of them dancing round the pole.
The private dances are 60 euro if i remember correctly, some girls are happy for you to touch them up, some don't allow it.
Drinks are pretty expensive 12 euro for a bottle of beer.
Hope that helps.
It s also a 5 min walk from Kurfustenstrasse where you can pickup a street girl if you fancy dropping a load.