I have bought or downloaded some coupons from snapdeal. Most of them were quite pedestrian though I did use one or two. I find Groupon to be a better site with generally better deals. Be on the lookout and you may just find something that you want. But rememberCaveat Emptor.
Most deals of restaurants are for the ones outside the city and a long way off. I have not bought anything that had to be delivered, just downloaded coupons, but I do not think they will offer anything really desirable at a cut rate.