HOW MUCH This book // 10, 000 dong. These envelopes // 5.000 dong. This picture // 20 dollars. This postcard // 2.000 dong . This local stamp and an envelope // 600 dong . Those sandwiches // 8,500 dong. This phone card // 50,000 dong . A box of color pencils // 15,000 dong. Three boxes of chocolates // 75,000 dong.