As mentioned before, Amazon offers two selling plans: Individual and Professional.
In the first, you have to pay a fee of €0.99 per product sold (excl. VAT), making this plan cost-effective for selling partners with fewer than 40 sales per month. If, on the other hand, you have a consolidated business with over 40 monthly sales, you should opt for the Professional plan, which has a monthly price of €39 (excl. VAT).
In addition, selling partners must pay a referral fee depending on the category of the product sold. For example, the referral fee for the Books, Music, Video and DVD categories is 15% for each product sold, and there is no minimum referral fee as in the case of other product categories.
In terms of fulfilment management fees, you will pay a fixed fee per product unit, depending on the type of product, size and weight. You'll also need to pay a monthly storage fee depending on the space your products occupy in Amazon's fulfilment centres.
You will find detailed information about the rates at the following link