The shop is located in Turkey. The buyer from Portugal. The article (watch) was sold via an online website stablished in the Netherlands (Catawiki) and consequently, the Right of Withdrawn is automatically applied.
The buyer refused the delivery and the shipping company will return the item.
The Turkish Customs will charge taxes for re-entering as so as, the shipping company will apply the return costs to the seller to pay. Such costs can only be known after the item is ready to be cleared, in Turkey. There's no way to know when exactly the item will be effectively returned to the shop (cleared from customs).
In my understanding, the buyer may not wait for undetermined period of time to be refunded. As the shipping company already declared the item will be returned and is already in transit due to the refusal of delivery, the buyer is entitled to be refunded. Thus:
-should the buyer wait for the seller to have paid for all the return costs charged by the Turkish customs & shipping company and "discount" such costs from the refund the buyer is entitled of or,
-should the buyer be refunded immediately and be invoiced later, for the return costs the seller had to pay to receive the item back?