魔法科高中的劣等生（6）：橫濱騷亂篇（上） (二手書交易資訊)

[{"sale_price":45,"disc":"20","prod_count":1,"sale_month":"202009","avg_price":45,"avg_disc":20},{"sale_price":156,"disc":70,"prod_count":2,"sale_month":"202010","avg_price":78,"avg_disc":35},{"sale_price":182,"disc":83,"prod_count":2,"sale_month":"202011","avg_price":91,"avg_disc":42},{"sale_price":190,"disc":86,"prod_count":2,"sale_month":"202012","avg_price":95,"avg_disc":43},{"sale_price":164,"disc":"75","prod_count":1,"sale_month":"202101","avg_price":164,"avg_disc":75}]