It is possible that the customer feels unfairly treated by the resale price compared to the offered trade-in price. However, it should be noted that the brand covers the costs of reconditioning (cleaning and repair), transportation of the item sent by the customer, creation of a product sheet, and storage costs.
The selling customer benefits from using your service compared to other solutions on the market: guaranteed voucher within 15 days, available customer service, no negotiation or exchanges with buyers, no product sheet to create, free shipping label.