動物生死書 (二手書交易資訊)

[{"sale_price":190,"disc":"73","prod_count":1,"sale_month":"202008","avg_price":190,"avg_disc":73},{"sale_price":130,"disc":"50","prod_count":1,"sale_month":"202009","avg_price":130,"avg_disc":50},{"sale_price":357,"disc":137,"prod_count":2,"sale_month":"202010","avg_price":178,"avg_disc":69},{"sale_price":290,"disc":112,"prod_count":2,"sale_month":"202012","avg_price":145,"avg_disc":56},{"sale_price":364,"disc":140,"prod_count":3,"sale_month":"202101","avg_price":121,"avg_disc":47}]