| 摘要 |
A user may purchase an option to cancel a wager in exchange for a refund amount. In purchasing the option, the user may select an exercise time from a plurality of exercise times, each exercise time having an associated price, which price may be the price of the option. The refund amount associated with each exercise time may be the same amount. Responsive to a user exercising a purchased option, a determination may be made as to whether the time of exercise is at least prior to the selected exercise time. If so, the wager may be canceled in exchange for the refund amount. |
