No. They have to comply with the law, same as everybody else. Their fees cover not only the cost of doing the paperwork, but also the cost of the duty WHICH THEY PAY ON YOUR BEHALF, and for which they expect to be reimbursed when they deliver the package to your door. In exchange for this service you get your goods faster than by any other method of delivery. Expect to pay more for better/faster service.

If you don't like paying duty on imported goods you can either lobby congress to exempt kilts, or you can buy in the USA.