There is also Pufftech, I buy from them and when I want to sell I also sell to them, their services is the fastest Ive ever seen, they make payments in a flash.
Thanks. I have searched for Pufftech, but can't find any website - do you know one? In some forums they publish a phone number, so it seems they're operating over WhatsApp. I don't consider that very trustworthy, and thus I will wait to include them in this list until they have a working website.