Do you have a buyer's agent in the South Hadley area? If not, ask friends/neighbors/family if they can recommend a full-time realtor for you to work with. (S)he can advise you on the market in South Hadley, and specific properties.
Good luck in your search!
Associate Broker, Massachusetts, New York, and Connecticut
Berkshire Property Agents
12 Railroad Street
Great Barrington, Massachusetts 01230