https://p20network.niu.edu/pricing/standard-class/2016-08-02T02:46:51-05:00https://p20network.niu.edu/pricing/vip-class/2016-08-02T02:50:54-05:00https://p20network.niu.edu/pricing/international-class/2016-08-02T02:53:18-05:00https://p20network.niu.edu/pricing/international-class-2/2016-08-02T02:55:30-05:00