一個都不留 (二手書交易資訊)

[{"sale_price":110,"disc":"44","prod_count":1,"sale_month":"201908","avg_price":110,"avg_disc":44},{"sale_price":380,"disc":152,"prod_count":3,"sale_month":"201909","avg_price":126,"avg_disc":51},{"sale_price":534,"disc":214,"prod_count":4,"sale_month":"201910","avg_price":133,"avg_disc":54},{"sale_price":318,"disc":127,"prod_count":2,"sale_month":"201911","avg_price":159,"avg_disc":64},{"sale_price":483,"disc":194,"prod_count":4,"sale_month":"201912","avg_price":120,"avg_disc":49},{"sale_price":265,"disc":106,"prod_count":2,"sale_month":"202001","avg_price":132,"avg_disc":53}]