By some calculation this means that a girl works 16 days a month and makes 2000 Euro.
That is more than a hundred Euro pr day and even if they share 50/50 with the owners it means at least two customers pr shift.
I suspect a small amount of girls makes an awful lot more than that (they get picked more often and for longer time periods) and a large number of girls makes very little (nobody picks them).
But what is even worse is that the real good ones go abroad.
An example of this is Eva from Discreetescorts:
http://www.discreetescorts.org/secure/detail.php?id=61&pageback=1
She has worked for Dreamgirls.dk with some SP girls:
http://www.dreamgirls.dk/pigerne.php
Eva is in the bannerad at the button.
Dreamgirls is hugely popular with the danes and I suspect that Eva can make at least 5000 Euro for a two week stint in Denmark.
With opportunities like that in other European countries why should any really top notch girls work in the clubs in Prague.
Its highcost escorts or abroad ( or porn) for the good ones.
The easy solution to this problem is to go to inner city clubs like Darlings or Atlas, the working girls there are very very friendly.
(For newbies, this is not a suggestion, but a joke),
Secondly, I would assume that the girls prefer tourists, not because we are more sophisticated or 'kulturny' but because we are more proned to tip the girls.
Its called 'mongers remorce'.
I would never tip a Danish working girl but some "poor" Prague girl have, particularly in my early days, recieved a tip.
I suspect most newbies do that because they feel sorry for them, and you really shouldn't. Like Manatus says the girls do rake in the bucks.