Training cost may provide context, but it does not replace an explanation of the knowledge and the applicable legal standard. An expensive replacement can reflect workload or ordinary business disruption. Establish why the applicant’s knowledge is special or advanced rather than equating a high cost estimate with eligibility.
Explain the estimate if it is submitted
Identify the tasks, learning stages and assumptions behind the figure. Avoid unsupported claims about the entire US labour market. Budget the immigration case separately so a business estimate about replacement does not become confused with government or professional charges.
First review turns a replacement-cost claim into a checkable business estimate: which tasks require learning, how long each stage takes, and what assumptions support the figure. The record that settles credibility is the underlying training plan and project history, not a round number. Sequence the specialized-knowledge explanation first, then decide whether the estimate adds useful context.
A weak case equates inconvenience or high salary with the legal standard. Hypothetical example: A Canadian maker of precision clock mechanisms estimates it would cost heavily to replace its assembler. The estimate should identify the internal procedures, supervised learning time, and production consequences while separately showing why the worker's knowledge is special or advanced.
Date the estimate.