JPN boxes at ~$30 make the box route especially attractive
For now Fiend Artisan seems like a fairly safe buy - before Tyvar it wasn't really on the radar for needing a reprint and it's a one-print mythic - so if you think you might be building around the card in Modern or Pioneer, I'd lean towards picking up copies now
while Commander decks use many of the same ideas, you do have other things to consider
It can break through the limitations of traditional toy stores and enter popular places such as shopping malls, cinemas, and offline anime stores, becoming a prominent attraction that draws a large number of people
The impact of this celebrity attention was quantifiable and dramatic
After that you have the grades 7-8, those are decks with a specific, consistent gameplan, with nearly-perfect land bases