I'ts seen as the 'ultimate' peaceful way out. The assisted dying clinics use it. although i do have to say i read an article about it the other day, and it seems they use other drugs also(the place i was reading about did anyway). so it might not be quite as peaceful as going to a clinic, but is still seen as the 'top' option.
Like you have said though SN is very cheaper, and a lot easier to obtain. SN might cost $20 whereas N is $650+
the thing with SN is people read some of the failures and they get put off, then theirs being sick, which is near guaranteed IMO. although possible with N aswell. From the accounts i have read of SN, i feel like even though the person sounds like they might be suffering, i'm not quite sure how aware they might be. a member who failed recently said they were in an out of consciousness and it wasn't painful. maybe some discomfort. If you read alot of failures (there is a thread on success an failure, a few actually) they haven't followed how to do the method correctly or were 'trying ' it out (don't ask, i don't understand!!!)
in the PPH(peaceful pill handbook) SN is rated at 78% an N is 88% i think, as a guide
Im in europe and got SN perfectly fine, in the US you can get it probably the easiest.
Lots of people have purchased from C and some have done it through his site, yes.
at the moment it isn't in stock, it hasn't been for a while. will he stock again we don't know, he says he will be though