Hi Nick,
I was by here a little earlier and saw that you had some questions. In case you still do, as the owner of the domain you would have been sent an email from Go Daddy's Domain Buy Service with an explanation. You can also take a look at this article for more details on the process -
Selling Domains Through a Domain Buy Agent
Please don't hesitate to contact the Domain Buy Service Team with any questions you may have. You can reach them Monday-Friday, 6:30am - 5:30pm and Saturday & Sunday, 8am - 5pm, at this number - 480-366-3303