A potato at some random grocery store is worth $0.50. This is more of novelty XD. That said, you're right, paying $3.50 for a potato on Massdrop isn't exactly "practical".
Oh man, I've been wanting Potato for a long time but could never really afford it. I hope Massdrop follows through on this so I can finally get a good deal!
Impossible. Massdrop has said in the past that they can't get discounted consoles. The margins are too low.
EDIT: Brick versus potato. A challenger appears.