Hello, i'm specialist in embedded ethernet.
Please see photos on PMB.
I can make a prototype and small series (if you desire).
I have already worked on this type of product (and have a lot of related things already done & tested).
I can make your product for +/- $50 per unit, this is an average. I need more details about your requirements.
Bye, please check pictures on PMB : i make top quality products. Thanks !