Identify which company records and explanatory work the specific claim actually requires, and keep that preparation separate from government filing fees, any optional processing request, and family filings.
Avoid paying for a narrative the facts do not support
Identify early which employees can verify the knowledge and the proposed assignment. Clarify whether a quoted engagement includes review of confidential material, any offsite-placement analysis, or responses to later government questions. A more elaborate written description cannot substitute for missing training or project records.
Beyond the Form I-129 filing fee and any associated fees at the amounts in the USCIS fee schedule, Form G-1055, the real expenditure is internal time spent extracting training records, version histories and approval trails, plus professional fees for preparing a statement that survives scrutiny. The immigration budget itself covers the Form I-129 fee, any asylum program fee based on the petitioner's size, the fraud-prevention fee applicable to L petitions and optional premium processing, all set out in the USCIS fee schedule.