Kingsisle Entertainment, the NFL’s largest online ticket marketplace, is offering fans the opportunity to get a $50 discount on Kingsisle tickets.The coupon is valid on Kingsisellow tickets and Kingsiseller tickets.The Kingsiselle Entertainment coupon can be redeemed through April 12 at 11:59 p.m.PT.Tickets are $60 for adults and $30 for students […]