Self-esteem and confidence are good things and can be expressed without having to be stated.
A person's value, has nothing to do with a dollar value. People that do, have nobody else to blame but themselves, when they are treated like a commodity.
The only reason for stating ones value is to demean someone else's value.
Let me be clear, an SPs services are a commodity and do indeed have a value. This value is determined by how much a client is willing to pay, and not merely the price an SP puts on them.