I'm from Melbourne, Aus and whilst you can't go to shop and purchase B17, you can Boxes of Apricot Kernels from a supplier in Shepparton, VIC. If you're interested, let me know and I'll track down the source contact details for you. (May need your email for this as I don't think I'm allowed to specify any contact details on this board)
Please be aware that thing like apple seeds (amongst many other things) contain B17 as well, so whilst waiting for your supply, start eating apples, seeds included - just make sure you chew the seeds rather than swallow them whole.
There are also several people that claim to sell B17 over the net - I've never completed a purchase in this way, so I can't vouch for any particular suppliers validity.
Glad to hear you're exploring the idea of B17 - it blows me away that it's such an unheard of/quickly dismissed concept.
Don't believe everything you know