Hey thanks for your Lovely answer.Hello fellow Swiss diver!
I did my drysuit course last December in Zürich and rented a suit and undergarment from the shop. I did this because I wanted to get a better idea of what type of undergarment I would need and general conditions in Lake Zürich. I then placed an order with seaskin, which by the way should arrive in about 2 or 3 weeks. I can let you know how much the suit ends up costing (import costs and taxes).
The problem as you may know is that while Switzerland is in Europe, it's not really Europe. We don't get the same benefits in terms of EU shipping and are much more restricted in terms of product availability. Also people here have completely unrealistic expectations in terms of second hand products (eg. Asking price is 5% less than brand new) and the used drysuits that come up are often more expensive than a brand new seaskin.
In general, for Central European lake diving you'll likely want a trilam drysuit and thick undergarments.
Where in Switzerland are you?
Indeed Switzerland is a bit tricky, it would be amazing please if you could indeed share how much were the taxes. I have the possibility to send the parcel to France or Germany and do myself the importation (Wich reduces in my experience a lot the fee, you end up paying around 10% of importation fee but don't pay eu VAT Wich is often 21%, so still good. But I know that when you send by the post the fee is huge as they consider the price of the parcel as part of the importation.
But please let me know how much did you pay. I am in Valais, between Martigny and Sion. Indeed most of the material that I buy 2nd hand comes from France as the price is more interesting than here...
Hope to be able soon to dive dry and maybe to dive together, Switzerland is very small