You have had some very helpful answers. My perspective is this: Do you know people that provide services in your town or area that have been in business a long time? Are there any that you just know you would not want to do business?
Length of time in a business, "knows the neighborhood", are helpful factors, but not the end all. I suggest analyzing their market plan, how well they relate to you and your situation, and above all, do you trust them? My experience is that there are Realtors that "sell in a neighborhood:, but just as "bigger is not always better", so is "neighborhood expert".
Another good question to ask is the sale price to list price ratio. That will tell you their ability to properly price homes. If they are a good agent, in a "normal market" it would be 100%, meaning if a home is listed at $100,000, it sells for $100,000. If their ratio is 97%, that would mean the home was listed for $100,000 but sold for $97,000. If it was listed for $100,000 and sold for4 $104,000, that would be 104%.
You don't want your home to sit on the market, you want it sold. Overpricing a listing is called "buying a listing". A good Realtor knows how to set the price right. Sometimes "neighborhood experts" aren't as "good as you think". Do you investigative work, and make the choice that works for you.