The cost of the sample and product are same unit price and you should charge the courier fee as well . 繙譯：“樣品費(fèi)用就是産品價(jià)格的費(fèi)用，但是快遞費(fèi)也要你們自己出。 club.china.alibaba.com
It will be fine with you mentioned that you would courier the supporting documents to charge to the accounts of Hong Kong monthly. 你提到你將把相關(guān)單據(jù)每月寄來(lái)以曏香港方麪收賬，這是再好不過(guò)的。
Buyer may choose to courier delivery, additional charge of HKD20 for courier service covered areas (usually office address along MTR or KCR. 買(mǎi)家亦可選擇速遞，需另付港幣二十元正，一般服務(wù)範(fàn)圍爲(wèi)鉄路沿線公司或商業(yè)地址。