Typical costs are certified copies from a civil registry, a replacement or confirmation letter from the institution that issued the credential, and certified translation where a document is not in English. Fees vary by issuer, so confirm each one directly rather than relying on an estimate.
Budget for copies, translation and any reissue
Translation and credential evaluation are separate services with separate fees, and paying for an evaluation does not produce a translated civil document. If the institution will reissue a diploma, ask about its charge and processing time before choosing between a reissue and a linking letter. Legal review of the assembled chain is usually a small cost against a delayed start date.
Cost here follows timing more closely than it follows complexity. The same registry copy ordered with eight weeks in hand and ordered with eight days in hand can differ substantially once expedited handling and courier charges are added, and an institution that would have written a confirmation letter without charge may quote a fee for a rushed reissue. Ask each issuer for its standard figure and its expedited figure while a choice between them still exists.
Where a credential evaluation is also needed, place it after the linking documents have been ordered but before the employer letter is finalised, so one report can be prepared once instead of amended afterwards.