japanese pokemon card rarity The No cards that weren't, and the lying POP report - Articles Rarity Tiers of Japanese Pokémon

It's interesting to see that 64% of the collectors surveyed may not even be aware that their collection may contain Pokmon from the 1st edition base set

Known initially as silver-bordered cards, Acorn cards are the new designation for non-tournament-legal cards that are not covered by the comprehensive rules

What about rare cards from other sets

The best way to sell Pokmon cards on eBay is to list anything with genuine demand as its own Buy It Now listing priced from sold data, and bundle only commons and damaged cards into lots

they are not printed anymore, sealed product is opened and cards get damaged or destroyed