I am a new user of both mouth shut and paytm . I have purchased a pen drive from the site paytm of sandisk company and 16 gb storage with an additional feature on the go facility . The response of paytm is very fast and the offer given by paytm are not available on the other site .
The facility of cashback is the good one and it became it the cheapest product rate in the market . If you are not so, you can compare the price on the other site it is selling the lowest one in the market.