Not just Rs303 plan.. There is Rs149 plan, which gives 2GB data instead of usual 300MB one. Even better plan is Rs499/- where 2GB data is FREE per day.
I am going for Rs999/- with 60GB data for 60 days. It is same as 499 * 2 months, but here is chance for using all of 60GB (no data lapse if we use less data some day) and useful for heavy downloads (eg > 2GB) as well...