This is a Trip Hopper brand range cube feeder that you can pull behind your pickup or a tractor.  Similar to the ones you see mounted on flatbed pickups but holds 3,000#.  This feeder belonged to my wife's parents and has not been used in several years, but has been sitting in the shed.  Appears to be complete and in good shape except that the remote digital counter display is gone, the cable has been cut off at the hitch and we haven't found it anywhere.  I did some looking online and found these available new for $4,850.  This one will be selling on Saturday, April 25th, at the Carr consignment auction in Larned, KS.  Thanks for looking!

 http://johnsonequipment.com/inventory.php?t=Livestock%20Equipment

http://tsfeeders.com/trailer.html