Artikel 18

1. The ordinary costs of executing a request pursuant to this Convention shall be borne by the requested State Party, unless otherwise determined in this Convention or otherwise agreed by the States Parties concerned. If expenses of a substantial or extraordinary nature are or will be required to fulfil the request, the States Parties concerned shall consult to determine the terms and conditions under which the request shall be executed, as well as the manner in which the costs shall be borne.
2. The following costs shall be borne or reimbursed by the requesting State Party, unless the requested State Party waives the reimbursement of all or some of these expenses:
a) The costs incurred by the attendance of experts in the territory of the requested State Party;
b) The costs of establishing and servicing video or telephone links;
c) The remuneration of interpreters provided by the requested State Party;
d) Allowances to witnesses as well as their travelling and subsistence expenses in the territory of the requested State Party.
3. The costs for the transportation to the requesting State Party of a person in custody carried out under article 36 shall be borne by the requesting State Party.
4. The costs for the transportation to the requesting State Party of a person whose extradition is sought shall be borne by the requesting State Party.
5. The costs for the transportation of a sentenced person to the State Party administering the execution of the sentence shall be borne by that State Party.