Case C-775/19: Judgment of the Court (Tenth Chamber) of 19 November 2020 (request for a preliminary ruling from the Finanzgericht Baden-Württemberg — Germany) — 5th AVENUE Products Trading GmbH v Hauptzollamt Singen (Reference for a preliminary ruling — Customs union — Regulation (EEC) No 2913/92 — Community Customs Code — Article 29(1) and (3)(a) — Article 32(1)(c) and (5)(b) — Regulation (EEC) No 2454/93 — Article 157(2) — Customs valuation — Transaction value of imported goods — Concept of ‘condition of sale’ — Payment in return for the granting of an exclusive distribution right)