here are the estimates of tariff & fees for U.S. customers.
(exact value may vary)
(Product total price + shipping) x 0.15 + 15 (UPS Brokerage Fee)
* 15% tariff regardless of price
* $15 Government / UPS brokerage fee
example) (138+35) x 0.15 + 15
total fee = $40.95 (tariff + brokerage fee)