一笔订单的总运费=买家支付运费+卖家支付运费
买家承担的运费是固定的,即店配60(台币),宅配70(台币),而超重的部分,运费是卖家承担的,即15(台币)首重+续重。
The total shipping cost of an order = the buyer pays the shipping cost + the seller pays the shipping cost
The shipping cost borne by the buyer is fixed, that is, 60 (NT dollars) for store delivery and 70 (NT dollars) for home delivery. The overweight part is borne by the seller, that is, 15 (NT dollars) for the first weight + the additional weight.