A chandler.
Chandler
The person who sells drink is known as sellsmen
An author is a person who writes and sells books.
baker
You call a person who sells flowers a (Florist)
A person who sells books is commonly referred to as a bookseller or a book vendor.
A person who sells ship supplies is called a chandler
A person who sells jewels is called a jeweler.
fishmonger
A butcher.
A haberdasher.
A glomber