Like most Magic: The Gathering cards, the value of Decoction Module depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Modern Horizons 3 Commander)
And I've been having a lot of fun on MTG Arena, collecting via jamming drafts instead of (on MTGO) playing a handful of drafts and then collecting via trading/buying, as I used to do
I wouldnt play it without significant graveyard synergies, but it shines in the right deck
I've written about Gitrog in a previous Commander Showdown, in which I stated that it's one of my favorite decks because of how slippery it is
The thing is that you actually spend 3400 gems to do this, which means that if your successful in tournaments using your in game earned gold, you could very easily pay for a premium accounts from your winnings