 2019  Contract number: [ complete ]  I.5. PRICES  I.5.1 Maximum amount of the FWC and maximum prices  I.5.2 Price revision index  I.5.3 Reimbursement of expenses  I.6. PAYMENT ARRANGEMENTS  I.6.1 Pre-financing  The maximum amount covering all purchases under this FWC, including all renewals and  reimbursement of expenses (if any) is for [Lot 1  - 300,000 EUR (three hundred thousand  euros)/ for  Lot 2: 360,000 EUR  (three hundred and sixty thousand euros)/ for  Lot 3: 300,000  EUR  (three hundred thousand euros)]. However, this does not bind the contracting authority to  purchase for the maximum amount.  The maximum prices of the services are as listed in the financial proposal in Annex II.   Price revision is determined by the formula set out in Article II.20 and using the trend in the  ‘European index of consumer prices’ (EICP) of the harmonised indices of consumer prices  (HICP) published for the first time in Eurostat’s monthly ‘Data in Focus’ publication available  on the website: http://www.ec.europa.eu/eurostat/.  Reimbursement of expenses is not applicable to this FWC.  Pre-financing is not applicable to this FWC.  1. The contractor (or leader in the case of a joint tender) may claim an interim payment up to  70% as stipulated of the price referred in the relevant specific contract or order form in  accordance with Article II.21.6. The contractor (or leader in the case of a joint tender) must send an invoice in paper format or  via  e-PRIOR  for the interim payment as provided for in the tender specifications, accompanied  by the following:  2. The contracting authority must approve any submitted documents or deliverables and pay  within 60 days from receipt of the invoice. • for the deliverables covered by the interim payment, a list of all  pre-existing rights  to the  results  or parts of the  results  or a declaration stating that there are no such  ,  as provided for in Article II.13.4; • the deliverables and other documents specified in the specific contract or order form;  I.6.2 Interim payments  7 