Hi. I don't like this idea. I see it as fair competition. I wouldn't mind if the card club selling account would buy the cards directly from the market paying market prices.
I don't like the idea of ​​it guaranteeing to get cards at a pre-set price.
I see it aimed at a very small group of players.
I think it will hurt the appeal of events and special cards.
It's like seeing in chat that a big player hires a smaller one to make the special cards for him. If he does that, he won't buy them from the market. This is why I didn't bother playing the Christmas event and it's highly likely that I won't craft either.
I believe in the game of supply and demand but only on equal terms. That's why I don't like this idea.