I am buying a new MacBook Pro for the back to school promotion from Apple. They are offering free beats with the purchase of a new Mac. They are nice headphones, but I already own a pair of the Airpods so I don't see the value in keeping them. When I go to order the MacBook Pro, I would select the beats studio headphones. They are normally $349. How much could I get for them if I sold them on eBay? Is there one color that sells better than others?