Because like the idea, developing the role of setting

Oops sorry I am not sure I understand what you mean. Is it a question? If it is, indeed I love statistics and settings that keeps the customer linked to the shop. Usually you can only do so with newsletters, so something automatic that let you know (via email I guess ?) that your game is available at the price you want, or that suggest other games in your price range is a fantastic idea. Congratulations !

It is not a question, what I mean is that I will keep considering my idea. Allowing the user to monitor everything is a plus of the project. Receiving alert, deciding for which product we desire the alert, automatic buy of an available product, time left for the arrival of the product, discounted products alert...these are some of the possible settings. I reckon that plots are the best way to show how the things go. In the User Settings panel you'll see what it is possible to do