Customs duty and VAT start at CHF 62 - this includes the value of the goods and the shipping costs.

https://www.post.ch/en/business/a-z-...ustoms-and-vat

Books and things with the Special VAT rate of 2.5%: from CHF 200.

Gifts: from CHF 100.

I order from iherb all the time. When ordering at iherb or elsewhere, I always choose not to pay customs beforehand (if I can) because the customs duty and taxes are always added even if the total value is below CHF 62.

For an overview of the customs costs from post.ch for an order of CHF 233: https://www.post.ch/en/business/a-z-...earance-prices