In "Get Me Some Medicine," how do David and Fellis end up binge-watching an old television series?

Fellis enrolls in community college and then drops out, earning him a tuition refund. He uses the money to buy a number of things from Amazon, and because he is a student, Amazon offers him six months of Prime membership for free. Once he has his new smart television and a Prime membership, Fellis has David over and they watch the entire Sopranos series.