It is a really good one initiative. Works well for my account.Click on "Choose product" in my account section of top right. Next you will get a pop up of service, select prepaid and you will get login options.
An additional charge of Rs. 50 will be applied for an itemized record of your unbilled usage.
There are no extra charges for raising a request again which has already been raised once.
You can raise a request for itemized bills for a period of not more than 6 months.