Minecoin Party Pack (Low Value Cards in Bulk)

I buy my kids a Robux Party Pack ($50 for 25 200 Robux cards) every few months and use these as incentives for good behavior. One of my kis has requested Minecoins instead of Robux, but there is no equivalent for Minecoins. While $20, 10, even $5 is out of the realm of sustainability for these purchases, I would happily spend $50 on Minecoins to have 25 carrots to dangle in front of my child, since Minecraft is such a motivational force for him. It also teaches him responsibility, accountability, and the power of saving up for something of more value, rather than always spending the full amount right away.