Tariff for used item from Canada to US

UPS has been using a new system.  I don't know if this is a sub-contractor or new division.  Not only do they try to collect "legitimate" tarriffs, the fees involved are highway robbery.  I ship all of the time both ways across the border and only started experiencing this over the past year.  Calling UPS can be as impossible as calling the IRS.
If you keep calling, you might get the right person who will reduce the fees.  The other option is to tell the seller that you are stopping payment and they have to take the item back.  Offer to pay the return shipping to them and walk away.  This Canada-US thing is getting out of control.

Forgot to say:  Ship via USPS and this won't happen.  UPS sucks!

I believe used items from Canada aren’t subject to tariff. But it’s based on the country of origin and this made in China component has an outrageously high tax due to our trade relationship.

I purchased a used dac from Canada, built in UK, and the VAT was about $40 (shipped UPS).

As someone in Canada who frequently imports used gear from the US/EU, I’m always tagged with duties. Make sure you ask the seller to report a "fair value" for the item you are importing .. if you get my drift.