Every song has a composer every book has an author every car has a maker every painting has a painter and every building has a builder. So it isn't irrational to take this simple logic a little further and say that nature must have had a Maker. It would be irrational to believe that it made itself.
I'm not sure about the selling part but I've always found that the things I've worn on tour have moved over to what people wear every day. Sometimes the things I wore in the beginning before I had money were things I put together.