I will pass this time. 

In addition, this Cardback is only available for a limited period of time, namely during the brawl. The exclusivity of the cardback will therefore remain in place in a temporal manner, if Blizzard were to offer it for money, it would still not be particularly bad, but the time limit would be completely lifted. So I think this is a very good solution.

Expected 2k gold until the new expansion arrives.. had to buy some ros packs for dust :)