Face Painting Fun

Today I had the pleasure of face painting at the Carey Fair.
I was not aware that face painting for 5 year old kids was such a cut throat industry. Seriously, there is a lot of expectation from parents for masterpieces created on the faces of their twitching children.

To illustrate my point more vividly:
My first customer was a child of about 6/7. First of all I must tell you that the mother came in and straight away warned the lady in charge of the stall (who was equally difficult to please) that the flowers to be painted on her little cherub's face were to be "dainty-looking" and not "chunky" like last time because she "wasnt happy with that when it happened last time." I was assigned with a full face painting of a butterfly on her other daughter's face. For the sake of my story I must make it clear that:

Full face painting= $3.50
Smaller cheek painting= $2.00

So I finally finish painting the child's face and I have to admit, I was pretty happy with the results. The mother however did not appear to be. Nor did the lady in charge of the stall.

Lady in charge: (to mother) Are you happy with that?
Mother: (I cant describe the face she made with words but if I had to it kind of looked like it said: "Not really, but I'd be happy with a discount, perhaps I could spend that few dollars on my children's tooth decay?")
Lady in charge: (to me) "Okay well lets just charge her for a cheek painting."
Me: :O

Am I over reacting or do parents sometimes really suck??