I would never buy in China directly, because it seems an harassment to communicate with them if you need service or warranty or send it back because someting is wrong with it.
Then I prefer to pay a little bit more to get local service.
Just my 2 cents.
recently found such portals as pandawill.com and aliexpress.com where can be found any product from China including self phones. Maybe someone has already ordered, have experience with? As with delivery and payment? Interestingly, since the prices are a pleasant surprise