2006 Trebro HarveStack For Sale: 2006 Trebro HarvStack, on a John Deere 6220 4 WD Tractors. Approximately 7600 hours. FOB Delaware. Selling for $58,000.00. At least $5,000.00 worth of parts included. Contact Chad at 302-500-0582 or 410-352-5288 for more details.