I mean you really shouldn’t be paying for the cards in the solo adventure, the solo adventure should be good enough on its own or should offer cosmetic benefits such as golden cards or new heroes rather than a paywall to people who don’t really fancy playing nearly 2 months to get a single legendary card that will rotate out.
The solo adventure was fun enough for me.
Whether there is “enough” value in it is an entirely subjective matter.
I mean I would be happy if they just made Reno craftable for people who aren’t as interested in the solo adventures rather than gating him behind content that they A. May not enjoy and B. Aren’t willing to spend such a large amount of gold to aquire 1 card to put into their mage deck. Solo adventures should be bought when the player justifies that the content is fun and buys it for the content of the campaign rather than its rewards gated behind it.