If the problem is attributable (whether identified remotely or onsite) to a part, material or component that is outside the scope of the Warranty or that is determined to be caused by an Excluded Failure, then Customer will be charged for the necessary out-of-scope part(s) and services at the price(s) defined in the Quarterly Price List provided by CSG to Customer prior to the start of each quarter.  In such case, CSG shall inform Customer of the out-of-scope charges as soon as commercially reasonable (which in some cases may be after the replacement part or technician services are complete). Customer and CSG acknowledge that the determination of a given repair being out-of-scope may happen at all stages throughout the troubleshooting and repair process.