My 2010 Q5 came with roof rail bars and a bag which I took out of the car 3 years back and stuck up on the rafters in the garage where they remain today. The new car has come with another set of the same things. Do these things have any value i.e. can I sell them / would anyone want to buy them? If they come with every car then every owner must already have a set so why would there be anyone out there wanting to buy another set?