Computing the Value of an Asset Based on Present Value - You have the chance to purchase the royalty interest in a gas well in the Barnett Shale. Your best estimate is that the net royalty income will average $25,000 per year for seven years. There will be no residual value at that time. Considering the uncertainty in your estimates, you expect to earn 9 percent per year on the investment. What should you be willing to pay for this investment now?