Facebook Marketplace does not charge any listing fees. Therefore, it’s free to start selling on this marketplace. However, the platform will charge when customers buy something. If an order is placed, the marketplace will subtract it from your payout automatically. In particular, you must pay:
Selling fee of 5% per shipment;
Or a flat fee of $0.40 per shipment under $8.
Moreover, if you choose to promote your listing using Facebook Marketplace ads, you may have to pay for those services.