Of course these are YOUR rules, and you are entitled to have them respected. Nobody has suggested you "should change yr mind/practices/rates".
You have mentioned an event, I mentioned my perception of that event, and that's it.
What works for me doesn't work for you and viceversa. What works for some doesn't work for others.
You find absurd that a client mentions that it has happened that a masseur would offer a full service for a $120 massage because he feels like doing it, I find absurd that a masseur offers a massage with only oral to him for $300.
There are masseurs who don't jeopardize their jobs doing what you don't do because they keep being successful at what they do.
That's life and that's my "there are no rules" in this case.
You are a smart guy, obviously hot, handsome and I assume successful in what you do, keep on.
Peace.