I am looking at a 61in tiger cub with a 23hp Kohler and 80 hrs, he says its a 2010 but purchased in 2011 looks excellant what would be a good price to offer and what did this machine cost originally any ideas. He is asking 6400. How do these mowers cut as compared to rest now mowing with Gravely 252 and just sold my Great Dane 61 Sr.