As we mentioned back in March, the NY Jets have moved to a variable pricing plan for season ticket holders this year. The Jets' 10 preseason and regular-season games have been divided into three pricing categories:   Marquee Games Cleveland Browns, Sunday, Sept. 13, 1 p.m. Philadelphia Eagles, Sunday, Sept. 27, 1 p.m. Buffalo Bills, Thursday, Nov. 12, 8:25 p.m. New England Patriots, Sunday, Dec. 27, 1 p.m.   Premier Games Washington Redskins, Sunday, Oct. 18, 1 p.m. Jacksonville Jaguar