@gottaketchumall , found another official distribution number:
Quote #1: “Since 1996, children have collected and traded over 13 billion Pokémon Trading Cards worldwide.”
Quote #2: “The Pokémon Trading Card Game, fueled by organized play programs around the world, has spurred global sales of more than 13 billion cards to date.”
– March 3rd, 2005
So this adds an important mid-point distribution number, I think – should help to narrow down print run estimates.