I’ll quote Mand’s rather brilliant summary of this whole issue…
Hearthstone - and by extension all other dCCGs - are correctly priced because they are successful. If they were incorrectly priced, then they would not be successful. The fact that you personally disagree with their pricing does not mean they have been incorrectly priced. It means that you are viewing the pricing structure incorrectly. You need to abandon your wrong opinions about dCCG pricing and accept them for what they are. There are plenty of Free to Play tools and options available to you with which you can either mitigate or entirely ignore the price.