I'd suggest buying from Flipkart. They seem to have the lowest online prices now (and free shipping, usually by Blue Dart).
In my experience, buying locally, unless you know the seller, usually ends up costlier -- especially when we figure in petrol, parking, time and traffic aggravation.
I trust on Bitdefender.I have tried most of anti viruses,but this one never let system down.All big name couldnt protect system & had to reinstall windows every 2-3months.
With bitdefender,almost never.
mcafee... who makes it....lets meet them for torturing our systems.. that thing takes the complete juice of the system.. you cant use it for what you actually bought it for...