I concur with a few others that this is shady. They gave you a price and MOQ quote and they should honor that. And as the quantity goes up they should lower it, not raise the price.
Everything in China is negotiated as to price. You never pay what they initially ask when shopping. Haggling is part of the culture.
Everything in China is negotiated as to price. You never pay what they initially ask when shopping. Haggling is part of the culture.