Fees involved with selling on Amazon FBA include:
Selling fee: Choose between the Individual or Professional Selling Plan, which charges based on the per-item sold basis or a monthly subscription fee.
Referral fee: Calculated based on the value of the item sold and varies according to which category the product falls under.
Fulfillment by Amazon fee: Shipping and handling are charged on a per-use basis, while storage is charged on a monthly basis. Check if you're eligible to enroll in the FBA New Selection Program, which offers free storage and removals for new FBA sellers for a limited time.
Both the selling fee and referral fee are only applicable to Amazon Marketplace orders, not MCF orders.