Publishers regularly write bonuses into contracts to factor in the possibility that a book will makes the Times list.
Some publishers include bonuses in contracts.
There is no possibility of obtaining a bonus in the publishing industry.
A boy on his skateboard.
The hand is holding a pen
A person screaming.
Julius did not arrive.
Fishing is not part of the economy of Martinique.
I really do not see the connection between self-improvement being a hobby.