I think there is actually, as they are not part of the EU customs policy
i remember ordering from yoox when i lived in switzerland and i didn't have to pay any duty so now that i think about it i suspect there's none.
Schengen is not about taxes. UK is not part of schengen, switzerland is soon to be. Schengen is about abolition of systematic border control. It makes it easier to travel between the countries. That's why you have to show your passport when you enter the UK and not always when you go to scandinavia.I think one thing is receiving in Switzerland, other thing is receiving in a country of EU. Probably Switzerland doesn't have problems with customs but I think EU countries have. I think we don't pay customs between EU countries because of Shengen and I don't think Switzerland is part of it but I may be wrong!
I thought you were supposed to pay customs/taxes when ordering from Switzerland to the UK. I know I looked into getting a watch from Switzerland and was put off by the possibility of paying extra. And I think that when I got a scarf from luxury-scarves it had a declaration form on the parcel? I didn't have pay anything then but I just assumed that it sneaked through customs because quite a few smaller parcels do.