I would say Snapdeal is better than other online shopping websites because I have been shopping on all the websites.
Let me give you an example, I needed a white shirt and for the same I have searched on all websites and I got the best deal on Snapdeal. Also delivery wise is way better than flipkart. Usually with 3 days your product will get deliver by snapdeal.
I have experience the same, when I needed a wrist watch. I had purchased a RAM as well from snapdeal but by mistake I ordered it for PC and I should have ordered it for laptops. And NO electronic product will get replace by any of these company but I was able to get the refund back just because I did not open the package and most importantly they heard me and accepted back.
I don’t think I would be able to get the refund back if the case with some other company.