Q: Is there any download link for Disable Customer Registration extension ?
A: You can purchase this extension at http://www.magentocommerce.com/magento-connect/medma-disable-customer-registration.html.
Q: Is this extension free or paid ?
A: This extension is paid. It can be purchased at http://www.magentocommerce.com/magento-connect/medma-disable-customer-registration.html