Magento module for adding custom products is needed.
Module should make it possible to have same exact "Add to cart" logic/functionality as here: [url removed, login to view]
Please, see the attached screenshot to understand which part exactly is the one to work on.
When bidding, please explain how would the module work (how much data entry will be necessary for it, what will be automatic, etc.).
Module must be with multi language support.
You should also be able to provide functional demo before delivering the project.