The most used payment gateways in India are CC Avenue and Payumoney. There are many gateways provided by several banks. If you have a lot of transactions for your site then it is good to connect with bank gateways. But among all of these the Payumoney has a buyer protection system. If a seller website make any fraudulent activity then the buyer or user can make a complaint with Payumoney within a said period of to get their money back. This kind of gateways are good for attracting more customers with a greater trust factor. I have used this buyer protection system as a buyer. I am also planning to implement this gateway to my upcoming website.