My family of 4 with another family of 4 are driving over Thurs night. Got hotel rooms booked at Westin Chicago River North for 3 nights. Hoping to get 4 tix through ISU but needing to get another 4 tickets. Don't see any cheaper prices than about $225 per ticket (plus fees) on the ticketmaster website that ISU provided in their email and those are 300 level up high. Are there alternate sites out there for purchasing tickets, that will be any better?