I just got a trade offer in my inbox asking for the same card they offered. Not sure if it's a bug or not .

So I did some "farming" (buying boosters and selling only in green) to get money and at some point bought 6 booster boxes. 30 boosters packs out of 120 went in the void (they didn't even made a sound for the last box).

A few ideas, unless they are rare, I wouldn't mind ocassinally someone trying to buy cards from you for a higher price, might be fun to add a time limit, so you try to get the card before the time runs out. Something more to do with the cards, not sure what that would be. Maybe higher rarities have unique cards only to them, a more exotic animal or such....

I'm enjoying it, question, how often does the game update sales? Is it real life based, is it stuff you do in the game, and if real time how often?

Add some, please! ^-^