You'd have to be either very brave, or very stupid, to order directly from a supplier in China through Alibaba, based on a few photographs. My experience has been hit or miss - about 50/50. When you have a problem, you can be pretty sure they will simply stop communicating with you. Even if they don't returning the defective is usually on your dime, which, for a machine, will cost nearly what the machine itself did. Then there's the issue of quality. You have no idea whether the machine is being built using modern precision machinery, or axes, grinders, and hand files. I've worked with Chinese machinery and electronics for many years, and it's incredible how bad it can be, unless the buyer has their own in-site quality control. Just look at some of the stuff that shops from the big sellers like Harbor Freight, Grizzly, PM, QMT, etc, and some of them HAVE their own QA at the factories.

Regards,
Ray L.