Exactly! This was my logic at least half a year ago. I have some guys who were honest and fast and prompt and so on who I can trust so gift payments were some kind of a saving for me and a sign of trust for them, a great example is SZ member magic, I always send gift payments to him and get my (his, haha) item in perfect condition. The idea such situation could happen with an established artisan, almost one of its kind at the whole continent, eluded my mind. I mean, this is what I have done when they have forgotten to ship my item in March in the first place: http://i.imgur.com/Ka4dBas.png . It was on March 10th.
tl;dr: great experience of others and myself with an established artisan Zam Barrett business led me to a false conclusion I can trust it. Never send your payments as a gift, protect yourself, don't be like me: left without any money or your item.
Right i am ok with sf/sz dudes. grailed scares me a little because its so easy to scam there.
The best experiences have been with Hide, PN\P, The Office and The Library London. Cant remember too many other retailers in recent memory...