For people who buy and sell Pokémon cards, the period right after a set releases is a chaotic one. Prices for illustration cards move in unpredictable ways, but the trend is almost always downward. Such has been the case for chase cards from the Pokémon 30th Anniversary trading card set — with one notable, unexpected exception. Within the span of a few days, the average asking price for the Jirachi ex Special Illustration Rare card has nearly doubled.
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