That is correct for regular earnings.
Self-employment earnings, however, require that you file a tax return if your net income is $400 or more. In your case your NET earnings should be below $400 so I still wouldn't file a tax return if the $600 from Amazon is the only income that you received.
**Say "Thanks" by clicking the thumb icon in a post
**Mark the post that answers your question by clicking on "Mark as Best Answer"
