Salam I use an app called vinted to buy things occasionally and rarely to sell. Its an app quite similar to ebay besides you pay buyers protection fee automatically
I’m wondering if this is permissible.
Based on the information provided on the website, each time a purchase is made an additional payment for the Buyer Protection  is charged. This payment is for certain services provided by the company as highlighted on their website. Charging customers for such services is permissible. Therefore, the Buyer Protection fee will not render buying and selling on Vinted as impermissible.
 Buyer Protection
When you pay on Vinted, Buyer Protection applies to your purchase. This protection allows you to have access to our refund policy, secure payment and assistance from our customer service for your purchase, if necessary. The Buyer Protection fee is €0.70 plus 5% of the price of your item.
Ifta Research Fellow
Checked & Approved by:
Mufti Abdul Rahman Mangera
Mufti Zubair Patel