我是許涼涼 (二手書交易資訊)

[{"sale_price":1956,"disc":592,"prod_count":9,"sale_month":"201910","avg_price":217,"avg_disc":66},{"sale_price":1649,"disc":502,"prod_count":8,"sale_month":"201911","avg_price":206,"avg_disc":63},{"sale_price":1590,"disc":484,"prod_count":8,"sale_month":"201912","avg_price":198,"avg_disc":61},{"sale_price":1210,"disc":368,"prod_count":6,"sale_month":"202001","avg_price":201,"avg_disc":61},{"sale_price":1326,"disc":401,"prod_count":7,"sale_month":"202002","avg_price":189,"avg_disc":57},{"sale_price":2155,"disc":654,"prod_count":11,"sale_month":"202003","avg_price":195,"avg_disc":59}]