在遠方相遇 (二手書交易資訊)

[{"sale_price":542,"disc":151,"prod_count":3,"sale_month":"201703","avg_price":180,"avg_disc":50},{"sale_price":322,"disc":89,"prod_count":2,"sale_month":"201706","avg_price":161,"avg_disc":45},{"sale_price":220,"disc":"61","prod_count":1,"sale_month":"201707","avg_price":220,"avg_disc":61},{"sale_price":180,"disc":"50","prod_count":1,"sale_month":"201708","avg_price":180,"avg_disc":50}]