When we sold our personal home, we used a fee-based broker who charged us around $500 (IIRC) to list on the MLS. We offered a 2.5% commission to the selling broker (buyer’s agent).
If you price it right, clean it up well, offer a basic description listing the best qualities (like a bedroom and full bath on the first floor, upstairs laundry, etc.), and take GOOD pictures, it’s usually very easy to sell a house. It’s always a good idea to have the name of a good RE attorney around in case you have any questions, but selling a home is not difficult.