This paper is revisiting computational Grid economy models with an innovative, unrestricted and purely market regulated approach where both the consumer and provider standpoints are considered. The paper starts by outlining the actual Grid model shortcomings in regards to sharing incentive, return on investment, resource usage efficiency and quality of service accountability. Subsequently, a replacement for the traditional utility function is presented in the form of an aggregation of statistical indices computed from previous transactions. While this sharing scheme is based on economic foundations, its intent is not to transform the Grid in an expensive capitalist system. Targeted goal is rather to stimulate sharing by assessing resources dynamically in some form of abstract grid unit fostering supercomputing democratization.