地圖之外：47個被地圖遺忘的地方，真實世界的另一個面貌 (二手書交易資訊)

[{"sale_price":244,"disc":"68","prod_count":1,"sale_month":"202007","avg_price":244,"avg_disc":68},{"sale_price":360,"disc":100,"prod_count":2,"sale_month":"202008","avg_price":180,"avg_disc":50},{"sale_price":674,"disc":188,"prod_count":3,"sale_month":"202009","avg_price":224,"avg_disc":63},{"sale_price":160,"disc":"44","prod_count":1,"sale_month":"202010","avg_price":160,"avg_disc":44},{"sale_price":430,"disc":119,"prod_count":2,"sale_month":"202011","avg_price":215,"avg_disc":60},{"sale_price":789,"disc":219,"prod_count":4,"sale_month":"202012","avg_price":197,"avg_disc":55}]