I think Brenden issue was with mailed goods and the attached customs form rather than items carried in upon entry to the country.

The law requires the vendor accurately fill out the forms and declare a value and if a commercial product the country of origin. There is also a list of what can and cannot be imported into each country and some of it would surprise you. O ftan get asked to claim a false value or declare a purchase as a gift. I have also lost a few international sales because I refused to lie . Can't please them all I guess!

Tony