Purchasing anything from China is always a bit of roll of the dice but my last HH motor purchase was from Alibaba and has thus far worked fine for almost 2 yrs. Could it die tomorrow? Sure but thus far I have no complaints. YMMV.
I'm assuming that you're talking about an HH motor for a BUD? I can't imagine $1200 for a motor for a 1 meter dish. I kinda wish I could get an HH mount for a BUD without taking out a loan against the house.
I have had an HH120 operating (still operating) for about 10 years. Took a beating during a wind storm a few years ago with a 1.2m dish on it, but a bit of welding and it's been working ever since. It would be overkill for a smaller 90cm dish but would likely last forever. If you are subject to bad wind storms though you might keep to a 1m dish size max. I have also used an SG2100 for many years, it's been a good positioner too, but I believe the newer ones aren't as good.