Expensive Plumbing Service

Mr. Brown was a skilful plumber. He was very good at fixing things around the house. He received many job about plumbing services.
One day Mr. Brown went to another city to do some work of plumbing there and his wife was alone in the house. While Mr. Brown was not in home, one of the water tap on the bathtub broke. Mrs. Brown could not repair the water tap because she did not much about fixing broken tap. So she called a plumber to fix the broken tap.

The plumber came to the house and fixed the broken tap in a few minute. When he finished repairing the broken tap, he gave the bill to Mrs. Brown to be paid.
Mrs. Brown shockingly looked the bill for a moment. According her, the amount on the bill was too expensive for fixing the broken tap. Of course she knew well about the plumbing service price because her husband herself was a professional plumber. she said; “Your price for fixing that broken tap is very high, isn’t it? Then she compared; “Do you know that the doctor costs less then your bill when he comes to my house?
The plumbing man replied calmly; “Yes, I know exactly. Then the plumber continued; ” I know well about it because I was a doctor before getting job as a plumber”