export declare class GetRefundRatePayload {
    storeId?: string;
    itemId?: string;
}
export interface GetRefundRateResult {
    /** 환불율 (백분율, 0-100) */
    refundRate: number;
    /** 전체 주문 수 */
    totalOrders: number;
    /** 환불 건수 */
    refundCount: number;
}