I would not pay for a punch card. A store usually has them as a PR item. They assume a certain percentage will never redeem them (same plan as gift cards). And, if the card clearly states they can only be redeemed if fully 'punched' or within a certain time frame - that solves that problem. This sounds like the shop owner doesn't understand the marketing strategy of the cards or is kind of a persnickety person. Having to pay for a card that's purpose is to reward a frequent buyer sounds contrary.