From what i understood from previous posts about this matter (they were from a couple months ago, i would have to search for them if theres anything else to find out or remember), we are able to even check the cards contained on the booster pack in the Tx itself, this is only part of how the blockchain tech works, as it is transparent and auditable, it's just the people that put their time and energy to cheat the system and its users in some way, just to get money.

Just like those guys who made multiple accounts and where everywhere begging for cards and starter packs, just to start selling them for half the price once the last update kicked in.

In my opinion, we are responsible for fixing this problem, we should find, report, and isolate the users that incur in these practices.