I was suspicious at first due to their process and low prices, but they're totally legit!
I ordered two sets of HyperX Predator 16GB 4266MHZ memory (HX442C19PB3K2/16) from ShopBLT. Why? They were the only ones on the whole accessible Internet that had them for MSRP. Two sets was cheaper with them than one set from other sellers. I was weirded out at their way of doing business, but decided to go ahead with the order. They had to order straight from the manufacturer, so there was going to be a decent wait. Well, everything happened smoothly and professionally. I got exactly five e-mails from order until delivery. It took a month to arrive, but all the ETAs they gave me were accurate. I'd definitely order from them again even if they still use an old-school ordering approach, plus they ask you for pictures of your card and deposit a small amount on your account you have to disclose to them for verification.