The first document sent by mail will be the death certificate. As an international document the death certificate is issued in English and it will not state the cause of death. The second letter is from the Canton concerned.
This letter is called an ‘order to dismiss’ and confirms that no crime was committed. This second letter is a formality and has no other purpose other than to show that the death was lawful under Swiss law (quite an important point if you think about it).
Costs
All Swiss VAD services charge the same fee (with the exception of EX International which says they operate on a donation system, as they are all volunteers).
A VAD in Switzerland will cost in the range of €10,000 or CHF10,000.
Some say the other three groups operate like a cartel as their prices are all the same. For the sake of transparency, the actual dose of Nembutal in Switzerland costs ~€50.
Depending on the organisation, you pay in installments. The first installment is paid generally at the time of application. Later payments are paid once you are approved.