According to this SC government report on timber prices 2013-2015, your trees that are suitable for pulpwood would be worth about $10 per ton, and the tree trunks that are good for making boards at a sawmill would be worth about $26 per ton.
https://legiscan.com/GA/text/SB49/2017
I'm guessing the trunk of a 30-year grown pine tree, about 70 feet tall, would itself weigh about 3 tons (not counting any of the branches or limbs-- just the trunk).
https://legiscan.com/GA/text/SB49/2017
I'm guessing the trunk of a 30-year grown pine tree, about 70 feet tall, would itself weigh about 3 tons (not counting any of the branches or limbs-- just the trunk).