Depends on how popular she is. If i get called the whole time, i dont go out for cheap of course, because the next person will offer better. 25.000 is higher than the total average but normal for a popular girl.
Its also this time of the year. Girls go back to their home country around new year so there are not many girls in the cafes. While the men are free from work so they will go. And they got their bonus not too long ago. I planned to go and try the cafe because of the new year. If i saw it was a good men/girl ratio i would stay and ask 30.000 to callers.
I didn't go though because i just returned from a trip and i got a lot of stuff to do now i'm back. Not sure if i'll go since i'll also have other plans tomorrow and once the vacation time is over it will be more quiet.
I guess the advantages of cafe is that you can pick a really pretty girl and get fs usually.
I know a lot of the girls are bad though. I made a pretty japanese friend there and if i hear her talk about work to me it sounds like she says no to almost everything the guys try. Not a cool attitude.
40 minutes to one hour is pretty normal (the standart is one pop) but i think being nice is important. Most guys who go to the cafes aren't that high class but i've gotten some really nice repeating gentlemen from there. I strongly believe that everything works best if both the guy and the girl have a good attitude to each other. When i first went to the cafes i was kind of scared so it didn't always work out but the few times i still go and its actually busy enough to make me stay and find someone (because i'm done sitting there all day, that was a rookie mistake) then we always have a super fun, mutually pleasing time!