Government charges per the USCIS fee schedule, professional fees for the eligibility review and petition, staff time to assemble procedure and training records, and the L-2 applications for any family. Quote each separately and confirm current government amounts at filing.
Spending on the right evidence
The cost that matters is internal time. Someone in the company has to locate revision logs, training records and project lists and write the plain-language description of the procedure, and that person is usually the shop manager or the technician himself. Budget that time before paying for a long legal narrative, because counsel can only argue from what the records show.
When comparing quotes, ask whether the fee includes reviewing the offsite arrangement if any customer-site work is planned, preparing the extension when the initial period ends, and answering a request for evidence, which is common in specialized-knowledge cases. Premium processing is optional and adds a government charge. The technician's own costs, such as a passport renewal or a medical for the family, are personal expenses.
Keep the affiliate's tooling and fixture purchases entirely outside the immigration budget; they are the shop's capital, not evidence of eligibility.