Any stream of cash flows can potentially be sold for the present value of its cash flows. And one of the biggest cash flows being sold recently is an artist's song catalog. The owner of a song catalog receives the cash flows from the royalty paid whenever a song is played. It was announced yesterday that Justin Bieber's song catalog was sold for a reported $200 million. And although we agree that this is a tidy sum, it is still smaller than the $500 million that Bruce Springsteen or $300 million that Bob Dylan received last year for similar sales. The price isn't cheap as song catalogs are reportedly being sold for 30 times annual royalties.