Well there is a HUGE difference in the value of a yard tree versus a tree in the woods. Yard trees are of ZERO commercial value as a lumber to a mill. In the woods is 100% different. The OP was asking about a yard tree which as zero retail value to a mill but could be very valuable to a guy milling his own lumber or cutting turning blanks. He/she has to assume the risks of it being a yard tree though.
A funny story on "yard" trees. My oldest son is renting a house on a farm about 5 miles south of me. About a month ago he sent me a text and said (name removed tree service) was there during the day and took down a 5 ft oak in the yard. If i wanted the wood I need to get over there. Well I went over on Friday and got about half the top. The next day we used the mini ex and Kenworth to get the rest of the top. The trunk section of about 25 feet was still there. It measured around 64 inches on the stump. I took him a 395 with a 36" so he could block it up. Well later I got a message that said he hit steel in a bunch of different places and was tired of sharpening the chain. He actually sheered about three cutters off.
Well that stem is at the bottom of a deep ravine now. I do wonder what was in it though. I would have liked to got it back over here and burned it just to see what was in there but that would have involved a both excavators and several trips with the RGN.