A more thorough explanation:

Definition: The author's share refers to the portion of royalties that an author receives from their work, as determined by an agreement with the publisher.

Example: If an author's book sells for $20 and their royalty rate is 10%, their author's share would be $2.

The example illustrates how the author's share is calculated based on the agreed-upon royalty rate and the sale price of the work. It is important for authors to negotiate a fair royalty rate with their publisher to ensure they receive a reasonable portion of the profits from their work.