You choose between two types of seller accounts when signing up on Amazon.  The Individual seller account charges $1 for every product you sell. You can also opt for the Professional seller account and pay $39.99 monthly.  Which account you choose depends on the total number of products you plan to sell in a month.  We sell our accounts on Professional subscriptions by default. Since you only need to sell ~40 products a month for it to make sense + you get more functionalities from your accounts.