That depends on the location you are looking at and the price level you are selling or buying in. Most markets are coming into balance; neither a seller's not buyer's market. But again, that depends. Different price levels have different market reactions. High price properties have less potential buyers than low priced places. Consult your Realtor to find out the details.
Realtor's are hired for their intellectual property. They are licensed. And before you came along, they were studying the market, following trends, getting educated about financing, contracts, home styles, life styles, insurance, inspections, marketing and so much more. They put weeks, months, years into continuing education to keep abreast of everything they can to help you out. I have a list of 230 potential things a Realtor will do for a transaction. And I'm sure there's more.
A Realtor is a Real Estate Agent that has taken an oath to uphold the Code Of Ethics of the National Association of Realtors. A Realtor goes the extra million miles to be responsible to clients and customers, the public as well as other agents. Anyone who takes the sanctioned classes and passes the state licensing test can be a real estate agent. That does not make them a Realtor.