Competitive Terms If the Customer is able to obtain from any Sub-Contractor or any other third party more favourable commercial terms with respect to the supply of any materials, equipment, software, goods or services used by the Supplier or the Supplier Personnel in the supply of the Goods and/or Services, then the Customer may: require the Supplier to replace its existing commercial terms with its Sub-Contractor with the more favourable commercial terms obtained by the Customer in respect of the relevant item; or subject to Clause 29.4 (Termination of Sub-Contracts), enter into a direct agreement with that Sub-Contractor or third party in respect of the relevant item. If the Customer exercises the option pursuant to Clause 29.5.1, then the Call Off Contract Charges shall be reduced by an amount that is agreed in accordance with the Variation Procedure. The Customer's right to enter into a direct agreement for the supply of the relevant items is subject to: the Customer making the relevant item available to the Supplier where this is necessary for the Supplier to provide the Goods and/or Services; and any reduction in the Call Off Contract Charges taking into account any unavoidable costs payable by the Supplier in respect of the substituted item, including in respect of any licence fees or early termination charges.