Weft remy hair extension pricing needed

I am a hair stylist in Michigan, USA. I have designed a hair extension system for salons to reach a bigger market. I am looking for high quality weft remy hair at a good price. For each full head system, I require about 56" of weft hair, ounces are not an issue since the client will decide what length. I would obviously be buying in bulk, with colors ranging from black to blond, straight, wavy and curly, maybe 14", 18" and 22". If you could give me some prices, so I know where to begin that would be great.

Thank you.