Hi, @leqclibre. I think you're underestimating the value of cards. To unlock a common card, you need 100 dec, equivalent to $0.10. So, a maxed-out common card is worth $40. You're right. But to unlock a rare card, you need 400 dec, or $0.40, so a maxed-out rare card is worth approximately $46. In the case of epic cards, it costs 2,000 ($2) dec to unlock each one, meaning a maxed-out epic card is worth $92 each. In the case of legendary cards, each maxed-out card is worth $110. That's really a lot of added value to an account.