seller
noun /ˈselə(r)/
  /ˈselər/
 Idioms - a person who sells something
- a flower seller
 - The law is intended to protect both the buyer and the seller.
 
 - a good, poor, etc. seller a product that has been sold in the amounts or way mentioned
- This particular model is one of our biggest sellers.
 
 
Idioms 
a seller’s market 
- a situation in which people selling something have an advantage, because there is not a lot of a particular item for sale, and prices can be kept high
- In a seller’s market, demand exceeds supply, and prices are high.