I think only Croma gave real discount on one or two items. Like 4th Gen iPad for 22k and kobo e-reader for 3k odd.
Rest of online portals just sold at same everyday price +- 100-200 rupees like they do everyday from months. Even the nexus 7 offer was same as from august where it was available for 7999 with sc card.
GOSF was made to snatch noobs in online shopping who have lots of money to spend and get carried away by MRP price.
I for one, didn't see any sort of sale, except the hyped up branding by Google and their friends. By sale, I mean a real sale where these sites show some gut and at least give 500-2000 rupees discount on items (even a limited amount would be fine) instead of increasing MRP price and showing a fake discount in shopping cart.
According to an article in some paper, most sites saw double to quadrupled sales in these 4 days. They could have taken croma's lead and given one two items on good discount instead of spending money on crappy TV commercials or ads. The discount would have helped in retaining customers.
Useless sale imo.