Separate government charges, credential verification costs and professional fees. The government charges depend on whether the classification is requested at a port of entry or by employer petition, and current amounts should be read from the USCIS fee schedule rather than quoted from memory.
Budget by who receives the payment
Three recipients are involved and they behave differently. Government charges are fixed by published schedule and change when the schedule changes, so confirm them at the time of filing. Regulators and credential evaluators set their own prices, and these are easy to underestimate when a degree was earned abroad or a transcript must be sent directly between institutions. Professional fees depend on scope, so agree in advance whether the engagement covers only the initial request or also a later extension. Travel is a fourth line where a port-of-entry request is used. What tends to move a budget is not the headline fee but a repeat: a second regulator letter because the first expired, or a second trip after an incomplete file. Ordering documents in lead-time sequence is the cheapest control available.
Hypothetical example: An urban planner accepts a fixed-term municipal contract and discovers that the degree parchment is in storage while the licensing board charges for an expedited letter. The first review produces a cost sheet sorted by recipient, due date, and refundability. The school record, regulator invoice, government fee schedule, and travel estimate settle different budget lines. Do not treat a consultant's quote as a government charge or assume a previous traveller's figure still applies. The economical sequence is usually to confirm the profession match before paying for optional evaluations, courier service, or a second regulator certificate that may expire before presentation.