The Cost Value Relationship of Privacy

I was thinking about privacy and its relationship to things like cost of access to personal data, the perceived value of personal data and the perceived value of a service. Here’s what I came up with…

As the cost of access to information goes down, the value of that information increases. (Also applies to ease of access.)

The likelihood that privacy will be lost increases as the perceived value of data goes up. There’s a point at which privacy is almost guaranteed to be lost.

The greater the value of a service, the more privacy is given up for that service.

The curves are SWAGS. I'd be interested in knowing if there's any research touching on the cost value relationship of privacy.