I have a pair of black Coach Issy shoes that have only been worn a few times that I bought two years ago. I am planning on selling them some time soon but was wondering if I should have them sent out for repair before I list them or not. The back of the shoe where the rubber sole meets the wedge heel has separated a little. It is not noticeable unless you are looking right at it. Coach said that they would send them out to get repaired and the shipping would be $20. Is it worth sending them out for repair before I sell them?