ENISA | EU | Study on monetising privacy - An economic model for pricing personal information (PDF linked from page)
From the executive summary:
“Do some customers of online services pay for privacy? Do some individuals value their privacy enough to pay a mark-up to an online service provider who protects their information better? How is this related to personalisation of services? The main goal of this report is to enable a better understanding of the interaction of personalisation, privacy concerns and competition between online service providers.”
(Source: lightbluetouchpaper.org)