Magento Product Import Module

Hi, We do have a Custom module on our magento shop, that's import products from a XML file. The company that did made this for us was sold and we need to change the module. This module is made for 3 xml files, but we need it to change it, that we can add unlimited numbers of XML files If there is no way to change it then we would need a new module that would do this job. Please let me know the price for both works Thanks