No, there isn't. I don't know that there ever will be either, it's just a real "functional" part of the site. There are a lot of folks who "use" the sell list but don't actually use the forum, so you'd never get a response. There are people who use the sell list for some other purpose, I know I have in the past used it strictly to track what manuals I'm looking for. There are people who have used it in the past, but don't keep it updated, so you wind up asking about something sold years ago. There are also people who keep their collection private, which includes their sell list, and by revealing that info you're violating that privacy setting otherwise you'll just see "someone" is selling it, but not who.
It just isn't functional in its current state.
In general your best bet is deciding that there is something you're actively after, go look at the item on the site and look at the list of folks with it in their sell list and reach out to them.
