All the above sites are good, especially healthkart.com, since it allows you to order things condoms online without embarrassing yourself at the pharmacy. My wife uses Flipkart.com and uread.com when she’s shopping for books and i’ve tried them out - both really good in offering discounts and service.
I make it a point to check both sites when I’m ordering books, to compare price. A recent website I really liked was fastrack - its very well designed!