Before your private sale can go live, you'll need to set certain preferences on your listing: the minimum offer and listing duration.
Your minimum offer should be the lowest amount for which you would be happy to sell your site. Interested buyers will only be able to submit offers equal to or higher than this amount.
The listing duration for a private sale must be between 3 and 180 days. The optimal duration for your listing depends on your calendar, your timeframe for selling your site, and on the type of site you are listing. If your site generates a lot of revenue and traffic, it will take more time for a prospective buyer to conduct due diligence; alternately, if your site has only been established for a few months, a listing duration of a week or two may be optimal.