One problem fencing around woods is that there is often a tree in the way of a nice straight line. There is often a need for a little bulldozing and added expense compared to a nice straight fence across a field or prairie. Or more sig zagging and posts etc.
It seems quite a bit high to me here in NE Texas UNLESS that includes labor? I'll still state that that seems high around here but there are always varying circumstances (remove old fence, dozer, specific corner braces, excessive H-braces, etc...)