Its not, sure there are some rares/uncommons/commens that become playable, but there are still a number of mythics. The most recent card that I would like to play, but can't reason the sticker price is Wrenn and Six, the is $70 a piece that's $280 for a playset. That's an absurd price point. I can buy an entire gaming system for that amount. I can buy at least half a dozen other games for that amount.
To top that off, I am paying real dollars just to even play the game against a decent opponent online (sure there are prizes, but they pale in comparison to the entry cost).
When there were actual physical cards and store fronts to support, I could understand the cost (at least a bunch of the money was going to someone I knew), but its mostly an online game now (especially with the pandemic).
I'm pretty sure this is the most expensive game out there (at least the most expensive that I am aware of), and its not even remotely close.