legend pokemon cards EX】Rayquaza & Deoxys Card Set 1st Edition Card Rare – japanmaster sleeved trading cards Pokémon™ TCG: Paldea Legends Tin

Originally designed explicitly for the Asian market, the set was mainly printed in Japanese, Simplified Chinese, and Traditional Chinese, but there was also an English printing, sold mostly in Australia and New Zealand, per MTG Wiki

They are not very well known

In comparison to later sets like the Neo sets, there is far more supply of 1st edition Team Rocket because this set was a followup to the original 3 sets where sales were extremely high so there were a lot of 1st edition Team Rocket booster boxes that were produced

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As for why the Pikachu Illustrator will likely forever be the most sought-after Pokemon card ever, only 39 of them were ever created in 1998