First identify the actual evidence needed to explain the applicant’s knowledge. A review of system security may serve a business purpose without establishing personal L-1B eligibility.
Define relevant preparation and review work
Clarify the evidence scope, professional charges and current official fees. More technical material is not automatically more useful if it does not explain the applicant’s acquired knowledge and proposed duties.
The filing charges are the Form I-129 fee, the L supplement, any additional fees that apply to the employer, and optional premium processing, all published in the USCIS fee schedule, Form G-1055. On the government side there is no difference between L-1A and L-1B: the petition fee, the fraud fee, the asylum program fee where the employer's size makes it applicable, and premium processing if chosen, all on USCIS Form G-1055 and all payable by the employer. Agree on the relevant examples and any explanations or translations needed. Commercial value does not replace evidence of the knowledge standard. Confirm current government charges separately from business training costs and professional services. The assignment itself carries costs that are not immigration expenses but should be planned with the petition: U.S. payroll registration for the subsidiary, health coverage, housing, and the salary continuity that the specialist will expect.