What does "exclusive right to sell" mean?
Exclusive Right to Sell refers to a Listing Agreement that a Real Estate Broker and a home seller enter into to sell the Seller's home/property. The Exclusive Right to Sell Listing Agreement means that no other Broker can list the property for sale, the right to sell the property belongs exclusively to the Listing Broker, and if the property is sold the Listing Broker is entitled to a commission, regardless of who brings the buyer to the transaction during the period covered by the Listing Agreement. There are other types of listing agreements but this is what is used most of the time.
What the person forgot to tell you was that you will have to pay a commissiom even if you sell the property yourself. If you want to be able to sell the property yourself and not owe a commission you need to list with an exclusive agency listing if the broker demands to have an exclusive listing.
There are several types of listing agreements. Maybe you should do a little bit of research to see which one suits you best. There are realtors who won't try very hard to sell your property if they have the listing agreement you ask about. They just leave it up to everyone else. Screen them close.