Maybe this should be more of a consumer behaviour study rather than just a popularity vote?

$1 pack of 5 is equally ratioed to $5 for 25 cards. The difference mainly is on defining the minimum amount to spend. Question is, why do we need to have a higher minimum?

Why can't we make it more accessible to others who might think $1 is enough. Having granularity seems better as well as someone's budget might just be $8 so can buy 40 cards, instead of being limited within only multiples of 25 cards.