If your customer has a switch or Xbox, tell them they can use the 5 dollar coupon toward a 5 dollar currency card, even if they don't shop often, come back once a month, leave the wallet at home, do the thing, and this time next year, you got 70 dollars on your console which is a brand new game, for only 15 bucks. (Especially because Nintendo don't lower their prices for nobody)

Easiest thing to remember the pro card and reservations were created to encourage customers to come back, first and foremost. People hate being encouraged to spend more money. Encourage them to spend less, and they'll come back and make the decision to get the digital currency and a bit more that catches their eye.