"I don't get why people like the Mona Lisa, the painting is neither original nor particularly well done"
Is just as much a subjective statement. JRE is, by most released figures the top interview podcast on the planet, his interviews regularly move Charts of third party media like Book Bestseller Lists and Music Charts.
There obviously is a huge audience and value there and I can only assume their agreement over 200M was based on some pretty solid math.