The main additional preparation may be contract review and collecting evidence of control and the specialised service. A client-site assignment does not create a separate immigration investment requirement.
Separate compliance work from charges
Request a scope that includes reviewing the statement of work, reconciling employer and client descriptions and assessing subsequent changes. Government filing fees, applicable supplements and optional premium processing depend on the case and route. Commercial contract charges and relocation expenses are separate from immigration costs; a higher service contract value does not establish L-1B eligibility.
The distinctive cost here is the review of arrangements between two companies, which involves reading contracts, reconciling how the engagement is described on each side, and sometimes obtaining confirmations from the client. Clients are not always willing to provide documentation for another company's petition, and the effort of obtaining it should be scoped before it is quoted. Budget also for ongoing compliance rather than a single filing, since assignments change and a change may require action.
Verify government charges against the actual petitioner and filing type, including any supplemental fee that depends on the employer's characteristics; note that arrangements involving placement at another employer's site can attract particular attention to the employer's circumstances. No fee alters the statutory conditions governing where the employee may be stationed.