The period for the provision of the services starts to run from the date on which it is signed by the last party. 

## I.4.3 Implementation of single FWC 

The contracting authority orders services by sending the contractor an Order form or specific contract by e-mail or via e-PRIOR . 

The contractor must either: 

(a) send the Order form or specific contract back to the contracting authority signed and dated; or 

(b) send an explanation of why it cannot accept the order. 

If the contractor repeatedly refuses to sign the order forms or specific contracts or repeatedly fails to send them back on time, the contractor may be considered in breach of its obligations under this FWC as set out in Article II.18.1 (c). 

## I.5 PRICES 

## I.5.1 Maximum amount of the FWC and maximum prices 

The maximum amount covering all purchases under this FWC, including all renewals is EUR 2.700.000 (two millions and seven hundred thousand). However, this does not bind the contracting authority to purchase for the maximum amount. 

The maximum prices of the services shall be as listed in Annex II. 

## I.5.2 Price revision index 

[Price revision is determined by the formula set out in Article II.20 and using the trend in the harmonised indices of consumer prices (HICP) MUICP published at http://ec.europa.eu/eurostat/web/hicp/data/database under HICP (2015 = 100) - monthly data (index) (prc_hicp_midx).] 

## I.5.3 Reimbursement of expenses 

Reimbursement of expenses is not applicable to this FWC. 

## I.6 PAYMENT ARRANGEMENTS 

##  I.6.1 Pre-financing 

Pre-financing is not applicable to this FWC. 

## I.6.2 Interim payments 

1. The contractor (or leader in the case of a joint tender) may claim an interim payment of the price referred to in the relevant specific contract in accordance with Article II.21.6, according to the following: 

