Festive Sale! Flat 50% off!Big Billion Sale!And what not! It is that time of the year when online shopping portals are abuzz with activity. There are lightning deals that literally appear and disappear at lightning speed. And if you do manage to avail any such deal, you almost feel you've conquered the Universe. Probably that's the whole idea- to infuse a sense of achievement in you, to make you feel you've 'saved' your hard-earned money.