While the promo was certainly under-priced at $3 now that the card will be Standard legal once again, I wouldn't pay much attention to the current price
Due to this quirk of Universes Beyond, Codsworth could easily keep climbing and climbing in price
Its funny, because it was a mythic rare in the set, but just an uncommon on my Arena account, apparently
Learn more about the latest way to build and play Gardevoir ex in my guide to the decks post Phantasmal Flames
This caused some stress on the Creative team, because creatively there's no difference between a creature on a card and one on a token, so the card concept avoids trying to explain what a "creature token" means from a flavor sense
Finding ones in great condition is the difficult part and these will still set you back a pretty penny