Sunstone is an organization that sponsors symposiums and publishes a magazine. They charge for admission to their events.
Here are a few more details about their upcoming 2014 Salt Lake Sunstone Symposium:
For all three days, all workshops, and an MP3 recording of the talks the cost is $225.
For all three days without workshops, the cost is $90.
For a first time attendee, the cost for three days is $75.
For a student with a valid current student ID the cost is $35.
For a single day's admission, it is $40.
The registration is available on the Sunstone site linked here.
I do not know what day or what time I will be speaking.