I agree with what you have to say with all your points, but let us bring up the following scenarios that correspond to your above points.
#2) I think that it is okay to bargain for extras when there are no posted rates. If an MPA charges 30/60/90/120 during a half hour session, I am going to bargain for the regular rates no matter what. So would most of you.
#3) How about when the MPA does not give any change back for the door fee? That pisses me off that I have to ask for it and then they tell me they don't have change, when you know that they probably do. I try to carry exact change so this doesn't happen, but it happens a bit from what I read in reviews.
#4) How about MPA that push for the highest option? You may only want topless and she wants you to go for the most expensive option! After you tell her no the session most of the time turns out to be mellow dramatic.
There is a flipside to this, unfortunately those MPA do not maintain a repeat customer base.
Do not harp on this, I only brought it up to explain the other side. I am a gentleman.
VBB