Those people are why new Pokemon TCG products sell out in seconds, and why you can't find them out in the wild, even after new sets have been released to replace them
There are some ways that you can hope to predict which cards will be the best to invest in and you can use simple methods of analysing trends, following market prices and checking on products which have already made good returns
Riolu (Space-Time Smackdown) x2 Mega Lucario ex x2 Hitmontop (Wisdom of Sea and Sky) x2 Rocky Helmet x2 Cyrus x1 Pokemon Center Lady x1 Copycat x2 Korrina x1 Arena of Antiquity x1 X Speed x2 Poke Ball x2 Professor's Research x2 Energy: Fighting This is a pretty straightforward deck wherein your cards build up early on and come out swinging, especially against ex Pokemon as there are multiple cards here that up your power against them
Instant Color tag templates(None) Snuff Out If you control a Swamp, you may pay 4 life rather than pay this spell's mana cost
While Japanese collectors differentiate between the ultra-rare No Rarity first edition and this unlimited reprint version (distinguishable by the rarity symbol in the bottom right), both are incredibly tough to find in high grades