Thanks for your reply, @bashadow. I've read your conversation with @anouk.nox in TP Discord.
I have had it with their greedy approach.
Just talked to someone who was trying to play without investing. We agreed on the fact that this is not only an unfair, but also an unsustainable model, and if they don't make any changes soon, it will be game over.
I followed your example and started selling all my spare cards. I think tomorrow, the gold deck will follow. Then the lower level account....