However, when I searched for the plan on the Official Website for Delhi-NCR region, the same unlimited plan is shown to be available for Rs 1099/-. You can check the plan here.
The most important thing about this plan is that it comes without any network restriction.This plan whether its for 899 or 1099 will be of great benefit to people, because of its cost-effectiveness. However it is to be noted that SMS are not free and will be charged as mentioned in the details of the plan.
Tata Docomo is the unified telecom brand of Tata Teleservices. Tata Teleservices is present in all the 22 telecom circles, and its offers GSM and CDMA services apart from 3G services under the unified brand name of Tata Docomo.