First of all I say that Ebay is one of the good online shopping website but where as coming to flipkart and snapdeal that all they all belong to India so they all can provide warranty products.
Ebay brings it’s products for outside of countries where it is unlocked but it is not warranted I had a great experience that is I bought an apple 4s 32gb internal phone in ebay for ata 13500/- and I thought that I was very lucky having such a good phone at very low cost but after wards when I came to know that it was out of warranty that is it is an foreign product whose warranty will not be valid in country so please dont buy high valued electric goods in ebay