There is no way to answer that question without knowing what the lumber compaines in that area are paying for their lumber and the kind of lumber on the properties, such as pine, oak, or other such hard and soft wood.
Some will charge to come clear your land for you if they are not selling the lumber already in stock since cut trees deteriate at a much faster rate than processed wood would.
Then you also have to find out if lumbering is allowed in that area.
Way too many variables here to say anything at all. But if everything is a go then your price would be determined by how many board feet of good lumber that they feel they could get from those properties.