The fees for the maintenance of  Software  are either expressed as a percentage of the licence fees or  are calculated at a fixed price. Duration of the maintenance shall be specified in each price.  Service  prices shall be defined at a fixed price or by  Person-day,  and shall include all general expenses  and expenses directly connected with the provision of the  Services  such as company management  costs, social security costs, travel and office expenses.  IV.1.4.1.  Upon signature of the framework contract, the contractor’s  Official price list  is appended to  the Contract as an Annex. The contractor will use its best endeavours to supply an  Official  price list  which only includes the Products which form the subject of the framework contract.  If the  Official Price list also includes items other than such Products, then the contractor  agrees to indicate clearly and accurately, for example by highlighting the relevant items in  the electronic version of the document, which subset of items of its  Official price list correspond to the Products forming the subject of this framework contract. If the contractor  fails to do so, he agrees that he cannot claim payment for, restitution of, nor damages for  items delivered to the contracting authority outside the scope of the object of this framework  contract.  IV.1.4.2.  The contractor agrees to make an updated version of the  Official price list  available to the  contracting authority at the frequency determined in the Special Conditions of the framework  contract.  IV.1.4.3.  The updates of the  Official price list  will be made available to the contracting authority either,  and by order of preference, for download by remote access to a website, to an FTP site, to  an intranet site, in electronic format (e.g. by e-mail) or in hard copy (or e.g. on CD-ROM), as  specified in the Special Conditions of the framework contract. When it is therein agreed that  such updates may be downloaded, then the contractor shall precisely indicate the location of  the download area (such as from an area on the contractor’s website, from an FTP site, etc.)  and provide the contracting authority, by a  Means of communication , with full and accurate  instructions, including access codes, enabling it to perform such downloads. Should the  Official price list  be made available to the contracting authority by remote access, the  contractor must inform the contracting authority in advance by a  Means of communication  of  the moment on which it will be made available on line.  IV.1.4.4.  When the Official price list is treated as confidential information by the contractor, the  contractor agrees to make the updates of the Official price list available to the contracting  authority not later than on the day it is for the first time made available to any other customer  of the contractor. If not, the contracting authority may claim damages for total or partial non- performance.  IV.1.4.5.  Once the update of the  Official price list  is made available to the contracting authority, the  contracting authority must accept or refuse it within the time limit set forth in the framework  contract. Such acceptance or refusal will be communicated to the contractor by a Means of  communication. The contractor agrees to provide the updates in a manner allowing an easy  way of comparing the different versions of the Official price list.  IV.1.4.6.  The contractor agrees to make updates of the  Official price list  available to the contracting  authority only when, considering the volumes of each Product already ordered by the  contracting authority, the global average price for all the Products is lower than the preceding  Page 8 of 40  IV.1.4. Official price lists  IV.1.3.3.  Software IV.1.3.4.  Services