The maximum value of any individual contract is ₹100. Thus, your total profit from a single trade will be dependent on the number of contracts purchased in that trade. If you buy 100 Yes contracts at a price of ₹50, and the market settles Yes, then you make a profit of ₹500. You paid a total of 100 * ₹50 = ₹500 to purchase those contracts, and they were paid out 100 * ₹100, for a total profit of ₹1000 - ₹500 = ₹500, less 1% trading fees.