www.glidepathgroup.com/assets/files/Australia_Post_Parcel_Case_Study_0907.pdf?phpMyAdmin=1bS1SNVH3ltijkhNQPMUxDVd3y1 I can find more if you like. 100% of incoming international mail to Australia is inspected by customs, the only way people manage to get anything of significant weight (ie: not flat, light, fits in an envelope) through is by luck. If you can find someone who has consistently gotten such packs through customs, maybe I will accept that you are correct. As it stands, I can find multiple references to 100% of incoming mail to Australia being screened. I have read one report that claimed 100% of non-letter mail is screened, and that is how people manage to get letters through, it is still screened but not 100%.