"They have to, at all times, retain their playability." Arita-san explained that's the one thing everyone forgets, because it's easy to get carried away when designing a card on a large digital screen
Without squinting, youre on 15 here, and thats equal to or more than the literal top 2 decks at time of writing, Dracotail & VS K9
Following that are some very good options if you are running tribal decks
Similar to Suicune ex, the Legendarys massive HP will keep you safe while you build Arceus ex in the Bench to then KO your opponents
The Collector Booster has a minimum of three Mystical Archive cards in every booster, including two foil-etched Mystical Archive cards
I suppose if you meant a total budget of x amount of dollars regardless of what individual cards cost, then i suppose it can all add up