Deej, what I just wrote made me think.
You're allowed two threads, right? If you can set up a thread so that it is "no reply/announcement" (I have no idea if that's possible here), you could make one for sales & bargains announcements.
Include a link in the first thread to this one for discussing said bargains.
Add a link in the first post of this thread to that one so people can check out the latest sale without having to scroll back through several pages.
Down side: If it's not a "no reply" thread you'll just end up with two chatty threads to maintain but if there aren't regular posts it will sink to the bottom of the list of threads. So maybe it's a crummy idea.