Really, do you have a link to anything concrete? All I can find are minor issues that are resolved fairly quickly.
get in touch with forum member: nitehawk
I can see from the thread they you're spending money - but it appears as though you're going through the other guy Mr. Li - so that's good. My recommendation is that your squeeze pcfli for every penny because he will negotiate and negotiate BIG TIME - he's got a lot of room in his pricing. I know that from experience. Squeeze all these guys - their markup is HUGE!!!
make a rediculously low offer and see what happens - the worst that can happen is that you get turned down, but at least it's a starting point for negotiations.
best of luck to you
ps: if you need a contact in china that can deal direct with the factory that builds these things I have one there. I had an intern from U of P Wharton School working for me a few years ago and he lives in China and told me that he'd be happy to contact any of the factories that build these things are get the bottom line price. I'll connect you with him on Facebook if you're interested - just PM me - I want to make sure my forum brethren are not being taken advantage of.