Purely hypothetical feel free to tell me I'm an idiot n it's the dumbest idea u ever heard . Let's use indiana sprint week (isw)for example. USAC sells a isw shirt for $25 anybody can buy it . Here's the hypothetical , USAC offers another shirt that can only b bought if u attend every night of isw. Not counting rainouts. It costs $50 because of limited sales . You would have to show ID every night at USAC trailer or swipe a card (only swipe 1 card) this shirt would b completely different and would b shipped to u afterwards so they know production #s. Again all #s and theory's r hypothetical . Dumb idea ?