If your package weighs under 4 pounds, measurements are under 36" and is
shipping International First Class then you only have a single sheet for
a custom form. When it goes Priority, weighs more than 4 pounds or
measures more then 36", that it then ...
I am not particularly fond of this fee but they have negotiated on our
behalf a discounted shipping fee when we can use with their labels and
postage applied. The more the item weighs in shipping and especially
using priority mail services the larger...