Hello,
I will tell you from my experience. My father worked with offline marketing and china products import/export.
1)Chinese people are way to smart so you can fool them.
2)They are not negotiating, you get only for what you pay. I will give you one example:" I went with my father back in 2008 i quess in China to more factories and i asked a phone seller if he can give me a phone with $10 cheaper. He told me this:Young man, this phone is worthing $65 if you wanna buy for $55 we will make a phone like this but will worth $55(Different colours,material etc)
So the final words will be : If you wanna sell replicates don't look for cheaper ones, in china you can find the most HQ products but they are not cheap, try to pay a little more extra money.
P.S: If you don't have budget to buy at least 500 pieces/per product, move on.

WHY? Like i said they will not negotiate with you, they make a lot of custom orders and if they will start the machines/work etc just for 1 piece it's a big chance so you can pay as musch as it's an original one
Cheers!