Rule #1: Always compare price at multiple websites and offline shops before buying.
Rule #2: Always search for discount coupons and offers before buying.
Rule #3: Buy online only if you are saving money compared to offline shops. In case of problem (10% chance), getting refund or replacement product is both time consuming and expensive.
Rule #4: Always search for product and website reviews before buying.
If you have any questions ask at our discussion forums: https://www.savemoneyindia.com/forums/