Go see him agian, if you plan to drive it home bring another person with you, if your gonna trailer it bring the trailer. Also, bring $900. Then offer $500 cash and see what he does, He sees cash and you ready to take it take it home then and there. Have him work you up to $750-800, You get the truck, he thinks he won.
2000 Cherokee Sport Build: http://www.jeepforum.com/forum/f22/2000-xj-build-slow-uneventful-1162913/