Case C-62/25, Staubsaugerservice: Judgment of the Court (Eighth Chamber) of 26 March 2026 (request for a preliminary ruling from the Bundesgerichtshof – Germany) – Bundesverband der Verbraucherzentralen und Verbraucherverbände – Verbraucherzentrale Bundesverband e.V. v JZ (Reference for a preliminary ruling – Consumer protection – Directive 98/6/EC – Indication of the prices of products – Article 2(a) – Concept of selling price – Online sales – Flat-rate processing costs for a total order with a value below a minimum amount – Exclusion of those costs from the selling price of the product concerned)