Ken, I'm not sure if you're still looking, but talking to a Realtor is always your best bet to find current market value of any property. It's tricky with land, so a Realtor who is active in the area and knows the market well can help you. The value in the tax rolls is insufficient - in some counties it's notoriously low, while in others it's notoriously high! At any rate, you need someone knowledgeable about the market they work in every day!
Nancy Chapmon, Realtor
903.241.6109 ~ call or text