Biking apparel with some big name brand company or racer on in is no different than foot ball clothes here in Nebraska. If it has a big red N on a Tee-shirt it cost twice as much. OTOH I would be willing to bet a lot that they are made out of the same material that a no name Tee-shirt is made out of.
Actually and logically if there is a name brand on say a Tee-shirt, it should be cheaper because of advertising for that company!!!!!!!!!!!!!