Tax and Duty to USA New Options Offered

[The Wizard of BC]

I will not use any courier service for international package shipments unless expressly requested by the customer.

I will also not purchase anything from any company who does not offer postal parcel service as their first shipping option.

It overnight delivery is the primary concern of a customer they will say so. But they must be cautioned that the duty and taxes charge to them may be the highest allowed by law.
This may come to them as a bill or invoice days or even months after their package arrives.
The duty, taxes, brokerage charges and fees may be equal to the cost of the item.

For packages originating in the UK I will always ask the shipper to use ParcelForce.