I'd be very careful buying directly from Baikal. Before they accepted only BTC and now it looks like only DASH. Either way you have no way of proving that you made payment. You HAVE TO TRUST them! That's no way to do business.
Best thing to do is to buy from a distributor who let's you pay with PayPal or credit card - so you have record of having paid.
You might even need proof of purchase if your order gets held up in customs!

There's a lot that can go wrong, and with everyone who still has stock having doubled the price per unit in the last few weeks, it's somewhat strange that Baikal is still offering units at 300 USD equivalent.

Caveat emptor.

Just an update, the Baikals have now more than tripled, and the quads have risen by 600% +. A little nuts considering that you could buy 8 individuals for the price of one quad now. That "bubble" pricing. Totally illogical. And those are the prices coming out of China!
Again, Caveat emptor.