I've seen some UPS brokerage costs being insane.
One gal ordered something from the USA and it cost her $20 to purchase plus shipping.
UPS charged her $42.00 brokerage plus the...... So she ended up paying over $45 in addition to what she paid the company she bought the item from.
Needless to say....she refused it..... A few weeks later she got the package sent back to her and the fees were waived by UPS.
The brokerage fees, not the taxes is what is killing a good deal from other countries. UPS has some of the highest brokerage fees around.
They sometimes assess the value of something according to their own "guidelines"....... Not a fair practice.