I get more concerned when I don't know the price. Or when I think I do but the other person expects a different price than the one I thought we had agreed upon. With the therapist, I just do not accept anything other than what I believe has been bargained for and try not to expect other than that too. I have a great belief in do not accept favors from a therapist because the hidden price may be too great. ( eg. she will expect me to be nice to her, or that if I accept her favor I will quit trying understand or just be submissive or whatever)