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post/gemrate/v1/grading_volume3 credits
How many cards are being graded: total graded all time, graded yesterday and in the last 7 and 30 days against the prior period, daily average, annual pace, the same per category, daily, weekly and monthly volume, and this week's most graded players, sets and cards (sports or TCG).
Parameters
Which top-players/sets/cards lists to return (volume figures cover every category either way).
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