I've messaged some of the "vendors" though the site and they all tell you to contact them via their Whatsapp or Gmail contacts which scares me away.
I have bought some supporting hardware for mining from Alibaba, but the GPU vendors all seem very shady, especially with the non actionable money transfers they want you to do (WU money to Turkey for a supplier in China?!?!?).
If they won't invoice me through Paypal, I don't buy it, and NONE of the GPU suppliers I contacted would take a safe (for me) payment method.
I find directly from the supplier you want is the best, I got a bunch of cards directly from EVGA at a fair price.
id like to know how you do this too. haven't had much luck getting ahold of msi. how many did you have to order to get them from the manufacturer?