一本你希望父母讀過的書（孩子也會慶幸你讀過） (二手書交易資訊)

[{"sale_price":354,"disc":99,"prod_count":2,"sale_month":"202009","avg_price":177,"avg_disc":50},{"sale_price":522,"disc":145,"prod_count":2,"sale_month":"202010","avg_price":261,"avg_disc":73},{"sale_price":1134,"disc":315,"prod_count":5,"sale_month":"202011","avg_price":226,"avg_disc":63},{"sale_price":1075,"disc":298,"prod_count":5,"sale_month":"202012","avg_price":215,"avg_disc":60},{"sale_price":220,"disc":"61","prod_count":1,"sale_month":"202101","avg_price":220,"avg_disc":61},{"sale_price":524,"disc":146,"prod_count":2,"sale_month":"202102","avg_price":262,"avg_disc":73}]