The main focus of the study was the analysis of the benefits and costs of improved e-Accessibility for society as a whole and for the organisations providing ICT based services. On the user side the target of potential beneficiaries considered includes persons with disabilities and older persons with age-related functional limitations. The study considers both tangible and intangible benefits. The perspective has been from a societal and economic point of view. It provides the first empirically grounded analysis of the extra costs that organisations must bear to make their website accessible, this means net of other ICT costs they would incur anyway.