Nice Carbine. I had a similar one that I sold three years ago through Rock Island Auction Company for 3250 and the buyer paid a hefty premium on top of that. That looks to be in better overall condition than mine. The serial range was the same and it had all original Inland parts and in an as issued configuration.
I want to add that, in my opinion that there is little interest in the latter ones on GB because they are way overpriced. We all know that the 1st rule in selling is start high because you can come down but its harder to go up. People who are really interested in selling will price the item accordingly.