Especially for contractors.
Contractors do what they do because they’re good at it and there’s a financial upside.
Occasionally, they may take a position less than market if they’re in a pinch.
BUT…
They know they’re being paid less, and they’re also probably getting calls regarding better paying options.
I think it’s only a matter of time when deciding to be cheap causes an employer to have to start over and back-fill.
Seems like a riskier move than to just start with market rates in the beginning.