我的第一本韓語課本 (二手書交易資訊)

[{"sale_price":1063,"disc":266,"prod_count":4,"sale_month":"202007","avg_price":265,"avg_disc":67},{"sale_price":1244,"disc":311,"prod_count":5,"sale_month":"202008","avg_price":248,"avg_disc":62},{"sale_price":1488,"disc":373,"prod_count":6,"sale_month":"202009","avg_price":248,"avg_disc":62},{"sale_price":549,"disc":137,"prod_count":2,"sale_month":"202010","avg_price":274,"avg_disc":69},{"sale_price":1583,"disc":397,"prod_count":8,"sale_month":"202011","avg_price":197,"avg_disc":50},{"sale_price":1390,"disc":349,"prod_count":6,"sale_month":"202012","avg_price":231,"avg_disc":58},{"sale_price":759,"disc":190,"prod_count":3,"sale_month":"202101","avg_price":253,"avg_disc":63}]