Well yeah, so I take it you're saying they recorded a sale that high. Someone had too much money to burn.
Well no. They record multiple sales and then average the price overall. So for example, three people buy a game, and two pay $70, but one pays $30, then the average price listed will be $56. And pricecharting records multiple sales of most games in a year. That's how they can track the actual price of games.
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