I don't know, and so can't comment, on the market in Ranson. However, as for the 6 month listing, Realtors like the listing to be as long as possible. The reason: It takes time and money to market a home properly. Sure, a Realtor may get lucky and the property sells during the first week. However, especially in today's market, that's very unusual. More often, though, it takes a while. For instance, 3 months in many parts of the country is close to the average. That means half the homes sell in under 3 months, half take more than 3 months. A Realtor would hate to lose listings which he/she has been marketing at the 3-month mark.
Now, having said that, in all the properties that I've owned and sold, I've never agreed to a 6 month listing. I've agreed to shorter listings, and promised the agent that if he/she was doing a good job and it hadn't sold, I'd renew my listing agreement. And that's happened. But many Realtors are understandably leery of such promises and assurances. After all, my promise was not enforceable.
One thing you should ask any Realtor (if it's not presented to you before you ask) is: "At the price you're proposing I list at, how long do you think it will take to sell?" And if you've got the flexibility and want to sell more quickly, go with a lower price. There are properties around me that are reasonably priced at $400,000 and likely to sell in 6 months. But if the owner said they really wanted to sell in 30 days, the more appropriate price would be lower--maybe $360,000, for instance. And, in this example, I'd certainly take a 3 month listing at $360,000 if that was what the seller wanted in order to sell his home quickly.
It's all negotiable--price, length of listing agreement, commission.