Give a 1 day free all access trial
I understand you put a lot of work into this website and I am not trying to insult you. I am always skeptical about paid websites. Would you consider giving a 1 day free trial to those who are interested. I think if people like the free trial they would be more than willing to pay more than what you are asking. You could raise the price to compensate
Or you could offer a discount on a future purchase after someone buys a card and then wants either a second card, day, or month.
Thats fair. Just keep in mind posting the results after the race can make some people unsure if it's legit or not