Just want to preemptively say that I'm not comfortable with sharing the source. Trust me I get how frustrating it is to try and find it. I'll only offer the advice to not bother with Google, DMC doesn't appear in Google results even with the complete name of the site.
After trying to find it ever since his original store was shut down (which I also found, but didn't order from while it was up), I finally found it a few days ago. After pondering for a few days, I decided to actually go ahead and make an order for 100g of SN (both because I am a larger person & because I want more than one chance at it).
It costed a lot more than I would have liked to pay, but its a price I was willing to pay for the relief of knowing I will actually have a way out if I come to the decision I want to take it. I am unlikely to use it as soon as I get it, I just want to know I have it in case things get too much for me. With fees and shipping, it cost me ~$120 Canadian to have it shipped to a PO box in Ontario. I didn't bother with paying extra for the express shipping since I won't be using it right away anyway.
Much to my surprise, my anxiety levels were not at the record high I expected when actually going through the ordering process. I was more concerned about screwing up Paysend than anything else (I used the "to a bank account" option, as the Mastercard/Visa options required information like his postal code which was not given).
I am a bit scared that customs might intercept my package and I'll get welfare checked, or worse get in trouble for smuggling (although I'd plead ignorance in either case). I do also have concerns around there being any other errors in the order process causing me to lose out on my order and the money I spent on it, but I'm far more worried about being caught.
I imagine that when I actually go pick up the package from the post office in a few weeks will be more anxiety provoking (although I do have a story made up in case the post office employee is chatty and curious about why I have a package from Ukraine). I am definitely worried about how I will bring the package home without any questions being asked by my family, although I've intentionally been more secretive about my packages' contents for some time now, so that I can keep any package's contents secret for any reason, not just ctb related things).
My order is still pending as of posting, but I will edit/post updates here when my order is processed, shipped, through customs, and I have it in my possession.