Service charges proportional to transaction prices
Article 7
1. The HICP shall include charges that are levied directly on consumers in exchange for the service provided and can be expressed as a flat fee or a proportion of the transaction price. If the price of a service is determined as a proportion of the transaction price, the proportion multiplied by the price of a representative unit transaction shall be used as an observed price. 2. Changes in the service charge that result from changes in the price of a representative unit transaction shall be shown as price changes in the HICP. 3. If a change in the price of a representative unit transaction cannot be measured, it shall be estimated using an appropriate price index.