Paytm is best for online shopping and bill payments because it give some cashback on almost every product and bill payment, I bought a DSLR camera from paytm, it cost about rs 20000 in every e-commerce sites but I got that same dslr from paytm with 10% casback and even I got a premium hand watch free. Thats amazing good job paytm and there is no fault in the product but the free watch is kind of little average, but no to worry coz I got the casback of 10% . which I wouldnt get if I bought the camera from any other site. And I also get casbacks when I pay my electric bills. Bottom line, I would definetely recommend this site, coz its amazing in my opinion.
Dont think something else just go for it.
Highly recommended.