I bought a couple sheets off of BlueViking, Escrow, on Dream. Paid for expedited tracked shipping. After 2 weeks I asked him for a tracking number, he provided nothing.
After several days I opened a dispute and BV provided a tracking number showing that it stopped moving 1 day after it was shipped - and hadn't moved since then. Support then closed the dispute, splitting the BTC 50/50.
I figure he saw a large order, put down a non-existent address, and possibly bribed FriedTheChicken. Live and learn.
EDIT: Acid arrived just over a month later. Still mad at support for finalizing early with proof of non-delivery like that but this may not be BV's fault. Leaving the thread up so people know what will happen if their order doesn't go through.
Sorry dude, he's been confirmed to be scamming for a long time. He used to be a great vendor, and now he isn't.