Japan auction for 13.6 million yen (approximately $136,000 )
Cards that are sold at high prices, are also coming out from Japan, and in July 2021, a PSA 10 copy of the Espeon 053/L-P Promo Daisuki Club promo card, which is quite a rare promo, was sold at $9,000 USD
Knuckles the Echidna Double strike, trample, and haste make Knuckles the Echidna a powerhouse that turns every combat into a burst of damage
The legal "Obelisk" and "Slifer" possess effects virtually identical to their video game effects, while the legal version of "Ra" has its effects severely weakened (it cannot be Special Summoned, does not gain ATK equal to the total ATK of the monsters Tributed for its Tribute Summon, and its Point-to-Point Transfer effect can only be used upon its Normal Summoning, thus limiting the player's choice and making it incompatible with its "Phoenix" effect)
Cards have been known to double in value in the span of weeks.* Let's look as some of the things that back up the "investment" aspect of Pokemon cards