空間就是性別 (二手書交易資訊)

[{"sale_price":800,"disc":306,"prod_count":7,"sale_month":"202009","avg_price":114,"avg_disc":44},{"sale_price":160,"disc":"62","prod_count":1,"sale_month":"202010","avg_price":160,"avg_disc":62},{"sale_price":258,"disc":99,"prod_count":2,"sale_month":"202011","avg_price":129,"avg_disc":50},{"sale_price":120,"disc":46,"prod_count":2,"sale_month":"202102","avg_price":60,"avg_disc":23}]