The $15 bucks is probably because I don't have elastic added. That's the problem to begin with. I have it cut off, the edge turned up, serged, and a double topstitch put on. And, not all sewing machines (or people) treat lycra nicely. If you don't know how to sew stretch materials, don't use your expensive jersey as a learning project. Unlike woven fabrics, it isn't happy with repeat efforts.

The cost is worth not having your jersey an inch above your belly button while your shorts are an inch below -- not unless this is some new biker's tan we're going for.