I HAVE NEVER BEEN INTO THE MOTOCROSS OR DIRTBIKES IN GENERAL BUT I HAVE A FRIEND SELLING A 98 YZ250. RECENT REBUILD WITH A JET KIT AND REEDS? OR REEVES? IT IS IN DECENT SHAPE. I HAVE SEEN IT RIDE BUT DONT KNOW THE VALUE'S. WHAT IS SOMETHING LIKE THIS WORTH? THANKS IN ADVANCE AND PLUS REP TO WHOEVER HELPS.