public override double 결제금액() { return(주문.결제금액() - get감사할인10원()); }
public override double 결제금액() { return(주문.결제금액() - get쿠폰10퍼센트(주문.결제금액())); }
public override double 결제금액() { return(주문.결제금액() - get감사할인10원()); }
public override double 결제금액() { return(주문.결제금액() - get쿠폰10퍼센트(주문.결제금액())); }