I am a newbie here. I have experienced two great non-FS sensual massages from different providers this past month. Donations were $200 for the hour. I have no handle on what an appropriate tip would be for a session that met expectations.  I gave each provider $80 and $100 for each respective session.  Am I in the ballpark as being fair and complimentary?

I think you were being quite generous.

I've never tipped!  I always looked at it as "her price is her price".  I pay the list price per hour.  No one has ever seemed to have a problem with that.