Not directly as a declarant: the ESPR obligation falls on the party placing the product on the European market (manufacturer, importer or own-label retailer). As a pure reseller of a third-party brand, you are not the declarant. But your principals will be: expect ESPR data questionnaires from the brands you distribute, and prepare data collection. For own-label retail chains, however, you are fully a declarant.
Read the source article: ESPR: obligations and timetable for the Ecodesign Regulation