  When an investor is faced with the option to purchase additional information
regarding an asset price, how much should she pay? To address this question, we
solve for the indifference price of information in a setting where a trader
maximizes her expected utility of terminal wealth over a finite time horizon.
If she does not purchase the information, then she solves a partial information
stochastic control problem, while, if she does purchase the information, then
she pays a cost and receives partial information about the asset's trajectory.
We further demonstrate that when the investor can purchase the information at
any stopping time prior to the end of the trading horizon, she chooses to do so
at a deterministic time.
