Well, with $1 US dollar (or a bit more than 20,000 dong) you can buy a lot:Vietnamese sweet soup Che: 15,000 Dong.Grilled rice paper Banh Trang Nuong: 15,000 Dong.Vietnamese barquette Banh Mi: 18,000 Dong.A bowl of noodle at street food vendor: 20,000 Dong.