下一波商業創新模式：圖像溝通 × 策略創新 × 商業設計思維，搶占未來市場商機 (二手書交易資訊)

[{"sale_price":240,"disc":"46","prod_count":1,"sale_month":"202001","avg_price":240,"avg_disc":46},{"sale_price":220,"disc":"42","prod_count":1,"sale_month":"202002","avg_price":220,"avg_disc":42},{"sale_price":582,"disc":112,"prod_count":2,"sale_month":"202003","avg_price":291,"avg_disc":56},{"sale_price":552,"disc":106,"prod_count":2,"sale_month":"202004","avg_price":276,"avg_disc":53},{"sale_price":230,"disc":"44","prod_count":1,"sale_month":"202006","avg_price":230,"avg_disc":44}]