I believe it is ultra high risk and for that reason it goes in the same category as Pharmacy (which is illegal) so you will need to do a cover business or something or you need to get a license business setup for instant in Switzerland which will cost you a lot of money.
I'm not aware of your budget, but I assume a cover business is what you are looking for.
You may approach some of the payment processors around and which already process payments for this business. And I would look into companies like instabill.
You usually setup a website, a company (EU corp or US corp) with some made up business description for instant the selling of furnitures, meat or whatever comes to your mind. Make sure the website later on reflects your business description and the prices match the trx you are processing.
Make a purchase of btc with one of the established exchange services by credit card. You will then get informed how you will be charged so you can find the credit card processor they use!
