我的第一本韓語文法：輕鬆圖解一看就懂的韓語文法入門書 (二手書交易資訊)

[{"sale_price":470,"disc":105,"prod_count":2,"sale_month":"202107","avg_price":235,"avg_disc":53},{"sale_price":325,"disc":"72","prod_count":1,"sale_month":"202108","avg_price":325,"avg_disc":72},{"sale_price":1035,"disc":230,"prod_count":4,"sale_month":"202109","avg_price":258,"avg_disc":58},{"sale_price":535,"disc":119,"prod_count":2,"sale_month":"202110","avg_price":267,"avg_disc":60},{"sale_price":480,"disc":106,"prod_count":2,"sale_month":"202111","avg_price":240,"avg_disc":53},{"sale_price":911,"disc":202,"prod_count":3,"sale_month":"202112","avg_price":303,"avg_disc":67},{"sale_price":570,"disc":127,"prod_count":2,"sale_month":"202201","avg_price":285,"avg_disc":64}]