The answer
Services can charge at different stages through spread, fiat rails, conversion and transfer fees. A low withdrawal fee does not prove the full route is inexpensive.
What to do next
Evaluate the entire buy-to-withdraw route using a single amount and currency, including destination chain fees.
Kraken crypto exchange
Exchange service closely related to question. Availability, supported assets and local eligibility must be checked before signing up or buying.
Visit Kraken crypto exchange ↗Official provider link · Compare suitability and availability before choosing.