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post/toretoku/v1/buyback_card1 credit
One card on the buy-back site: the price the shop pays for an A-rank copy (or that it takes it only in a bulk parcel), its language, set and notes.
Working example
Parameters
A buyback_search row's item_code, the numeric product code, or a toretoku.jp/kaitori URL.
yugioh or pokemon: the two games Toretoku publishes buy prices for.
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