Sending Documents via DHL

Working with foreigners (read: Japanese) required me to adapt their working style. They are indeed hard-working type. Yesterday I was asked to send documents directly from Palembang to Tokyo. I had already asked the local staff in Jakarta how she usually sent documents to Tokyo. In fact, she just prepared the documents and later the officer from DHL would pick up them. She did not tell me how much the cost is. One thing I forgot to ask when calling DHL Customer Service is the cost. I only asked the estimated time from Palembang to Tokyo. It takes around three business days. When I went to DHL giving the documents to be sent, I was really surprised. One document, even it weighted less than 0.5 kg, cost Rp 431,000. I was really shocked. But, the documents to be sent to Jakarta had already been sent via TIKI, and the Japanese staff told me to send directly to Tokyo since it did not need to be signed by other person, whereas the documents sent to Jakarta needed to be signed first. IF, the documents sent to Jakarta does not have to be signed, I believe he would ask me to send them directly to Tokyo as well. Finally, I decided to send them. Hopefully it would reach on time or even in time.