Life Time Deal is a limited offer for early adopters of Avrodh - Web Extension, that gives access to all our premium features, forever, in exchange of one time payment.
Life Time Deal will remain valid as long as Avrodh.com is able to operate. Naturally we would like to keep operating and providing service for as long as possible.
No, it is not possible to upgrade to LTD. If you have already purchased premium version, you will have to purchase LTD separately. Your premium license key will not be affected by LTD purchase.