I have had 2 from china, one posted and one chosen and bought in person.
generally you get what you pay for. The post one came o.k but was a fluke as it was badly packaged. Usual issues, belts all dirty pots etc etc . . . It cleaned up great but was a hassle, cheap tho.
The hand picked one was obviously great same stuff though, general clean and fix . . That was was £30 I think , and I brought it home on the plane, as in it went in the first crew wardrobe ( i was polite and the staff were well cool)
Lots of horror stories from chinese 777's out there, tonnes in fact . .
Take a gamble if you understand the risk so to speak . .
And to top it off, I was flying on a boeing 777 ! ! ! ! ! ! Genius ! ! ! !