Ideally, the price of a service should take into account the cost structure, the perceived value to customers and the competition. Apparently, the only method satisfying these properties which is valid even for non-homogeneous services was proposed by Debély et al. (2008) and Fragnière et al. (2008). However, this method has a major drawback: to be able to construct the model, one must be familiar with operations research. In this paper, we develop a generic model that requires only data and where no modelling is needed. This permits even non-specialists to use this powerful method.