Government filing charges are set out in the USCIS fee schedule and vary with the forms filed and with optional faster adjudication. Assembling the corporate evidence is usually the larger cost for a company of this size.
The evidence costs more than the forms
Hypothetical example: a Grand Bay-Westfield distributor budgets for a filing fee and nothing else, then spends six weeks paying its accountant to reconstruct nine years of payroll and its bookkeeper to pull contracts from three different systems. That is where the money goes in a small-company transfer. Government charges should be read from the current USCIS fee schedule rather than a remembered figure, because they change and because which forms apply depends on the filing.
Optional faster processing is a separate election with its own charge and it does not improve the petition, only the speed of the answer. The costs worth planning for are the accountant's time, the corporate-records search, professional review of the duties description, and the cost of a request for evidence if the first description is thin, which is the outcome careful drafting is meant to avoid.