I'm no expert because I've always managed to stay under the magic amount. But here's the Swiss Customs website:
http://www.ezv.admin.ch/zollinfo_pri...x.html?lang=en
And an example:
http://www.ezv.admin.ch/zollinfo_pri...x.html?lang=en
Remember they count the price of the item plus the shipping charges when calculating the value. Also make sure you know the shipping company. The Swiss Post doesn't operate in Finland

, so even though they take over once the item arrives, you want to know which company is bringing the item(s) here.
For example if the vendor uses DHL, you could face some additional charges:
Swiss Customs clearance, DHL
If the Swiss Post opens the item to verify its value, you might pay an inspection fee on top of any customs duties.