I highly doubt if any real data is published all of them are commercially sensitive and are under NDA. Mass production in this context is at least 1 million units.
Could you point to any data, circumstantial or otherwise that indicates a 1 cent device of this type? Perhaps you could elaborate on why you believe such a price point would be achievable or even offered. Otherwise, I'm sure you can understand how the rest of us might have difficulty evaluating the veracity of your claim.
EEVblog has a video of what could be possible. He is talking about 3c part. With direct negotiation at massive volumes, sub 1c part is definitely possible.
Is there any evidence for this? what volume do you mean by "mass production gadget"?