Just too bad for the buyer not to inform you .. Not your fault as every country have different rules and regulation .. Maybe buyer think you will under declare . Or maybe he will not get his package as a rock might be there instead ..hahahah. just joking .. Singapore is pretty safe in posting just that human error most of the time .. Also we jail people for stealing and plus some canning if repeated offences.. So postman are well behave here . Never see on news postman being investigate for stealing mails and parcel . Singapore is a small country so this type of news will be headlines news if it ever happend . By the way , i think the fastest Register Article i ever do is shipping to japan .. Post on Monday and buyer receive on thursday .