Bartender Skills

I kinda want to go back to Hearthstone now I got Lord rank on Underlord but I would need to not only buy the current expansion but the 2 previous one. That's pretty much a 150$ USD investment just to be able to have a chance to not be raped by Demon Hunters. I think Blizzard need to make older sets cheaper but what I know?

Guess I'll try Thronebreaker instead.