"An Ivy League level education for $20 a month..."

Essentially free tuition.  Able to handle 15,000 students for $6 m a year (~$400 per student).  

UN online University

College/university education at the undergraduate level is now merely credential farming (the value achieved based on the value of the school's brand).  Worse, easy debt drove scintillating inflation rates in higher education.  Now, nearly the entire value of a degree (improvements in lifetime earnings), has been captured by the educational industry.