Today I am sharing my real experience with payumoney.com & attaching screenshot of my regular transactions with payumoney.com. It gives you 1% discount each time you shop online from anywhere whether it is snapdeal, bookmyshow, ebay, Flipkart etc.
Some websites provide schemes also for using payumoney payment gateway like big basket was offering 20% cashback for payments made by payumoney gateway. I love using it due to its security also.