What store(s) if not online do cowboys buy their Wrangler PBR Team Enterprise Rent-A-Car Sponsor shirts?

I have been questioning this to many online, and to me after researching this for 5 months, it seems to be a mystery. I have only seen one PBR Wrangler Enterprise Rent-A-Car shirt online and that was on Worth Point. It was a Brian Canter Rent-A-Car Wrangler PBR Enterprise Sponsor shirt autographed by Brian Canter of North Carolina. Now, by researching these shirts, I have just only found that one Enterprise Rent-A-Car shirt by Brian Canter. I know from experience by e-mailing many online including flickr and myspace that I tried reaching them, and yet still to answer with the exception of a couple or few. Does anybody know of a place where they actually have these PBR Enterprise Rent-A-Car shirts? I have been searching for 5 months online for one that is like Brian Canter's or Ty Murray's or Kody Lostroh's Enterprise Rent-A-Car shirt. Still, yet to find one. However, I know for a fact that they exist but I question how Cowboys buy these Enterprise Rent-A-Car shirts. I have seen various Cowboys wear these embroidered Enterprise Rent-A-Car shirts, but I wonder what store, and/or, store(s) these cowboys "Buy" them from. That is a mystery to me. Where do they come from? How do they buy them? I know that they are Wrangler PBR shirts for Professional Bull Riders, but how do the cowboys buy them, or where exactly do the cowboys buy Enterprise Rent-A-Car Sponsor shirts from that are white that look like White Dodge Rodeo RAM Wrangler shirts that have The Enterprise Rent-A-Car Logo emblem written on their sleeve? What store do the Bull Riders buy these shirts from exactly?