HDCMobile has been smooth for me as a buyer and seller. I wish they would improve their platform for making offers and counter-offers, but otherwise, I have no complaints.
I've bought from Fastcardtech website for the past 8 years with no problems.
Fastcardtech has one of the best customer service reps ever. Fastcardtech does
Stand by their money back policies. I would definitely recommend
Fastcardtech to anyone wanting superb customer service.