It is very far from 'ludicrous'. That very attitude demonstrates the validity of my point - failure to understand that 'value' is not necessarily based on money. The fact that some people choose to try and make that attribution contributes significantly to the ills of humanity.
Yeah, sure, you can put a price on anything, but does that monetary value necessarily reflect true 'value/worth', no of course not. Just as compelling someone to put a price on their work, if they choose not to do so is grossly oppressive - who are you to tell me that I must put a price on what I do?
'Materialism' is a very ancient problem, one that goes to the heart of the human condition. It leads to treating people as objects, and defining objects only in terms of what monetary value they are ascribed.