Set product price with math.

Hi guys, I need a module that will help solving some problems for a printing website that is built on Prestashop 1.6.0.9 Best solution is a module that will work like this one: ( [login to view URL] ) Example of how can the module work: Poster - I: Initial [login to view URL] say 50$ S: Size of paper. A0, A1, A2, A3 and the three standard poster sizes 50x70, 70x100 and 100x140 cm. For each of these sizes we always need to store the total square centimeters. P: Paper type. Lets say there are 3 types of paper, more could be relevant, and to each of these we need to store the square centimeter price. C: Color – the ink and material cost during production – is calculated by square centimeter. In this example lets say it is 0,03$ per square centimeter. G: Our standard service offering help from our graphic designer, none, 1 hour or 2 hours at standard rate lets say 30$ per hour. Q: Quantity With all of these attributes we need to solve what the price will be with: (((S*P) + (S*C)) * Q) + I + G For every product we have different equation how to determinate the price. So best solution will be for us to have a system that will give us the price following the math equation that we will write on the product back-end. But we are open for suggestions how can the math be done in the Prestashop back-end and how can we achieve this to work on Prestashop 1.6.0.9. Looking forwards!