The seller hasn't been back to this site since the day after the ad was posted. It's unfortunate when sellers don't post a sold notice, but I'm afraid that's often the case.
If you click on their username in the ad, it will take you to their user profile where you can see their "Last Activity," which is a good indicator of whether they are still monitoring this site. If it looks like they are still around, clicking their user name also lets you send them a private message, which is the preferred way to exchange contact information.
In this case, since they left a phone number, you can always call. If it is sold, perhaps you could add a post with a follow-up report, so the ad can be archived.
Best wishes in your "egg hunt"!