seller
US /ˈsel.ɚ/
UK /ˈsel.ɚ/

1.
a person who sells something
:
•
The street seller offered fresh fruits.
•
She is a top seller in her company.
2.
a product or item that sells in a specified way
:
•
The new smartphone is a best-seller.
•
That book was a slow seller at first, but eventually gained popularity.