Question juridique clé
Whether the CHF 75 reduction for returning an old vacuum was a taxable payment in lieu or a discount.
Solution extraite
The transaction was a discount, not a payment in lieu; no taxable exchange arose from the old vacuum because it had no value for the retailer.
Motifs extraits
The advertisement clearly promised a CHF 75 rebate on the new product range. The old vacuum was only a condition for participation in the promotion, viewed from the customer's perspective. Since the retailer disposed of the old vacuums, they had no exchange value for it, excluding a barter.