Check Craigslist. You'll have to wade through a ton of crap on a regular basis, not to mention grievous abuse of the words "regulation", "professional" and "tournament", but if you are patient there are some nice tables out there to be had out there.
Not sure what you mean by older, whether you are looking for an inexpensive early Gold Crown or something a little more sexy, like an Anniversary or Centennial.
If the latter, and you are not concerned about shipping, atthecat has a gorgeous Anniversary for sale in California. The thing is cream, I think it came out of a mansion in Beverly Hills. Here's the link (with pics):
http://forums.azbilliards.com/showthread.php?t=148498
Hope this helps, good luck with your search.
Are you looking for an 8 or 9 ft.?? I have a friend who has an 8 ft. for sale here. I haven't seen it in a couple of years but it was in good shape the last time I played on it.
The table is located about 2 hours from louisville. Let me know if you are interested and I will get more details.
Gary
We have one we are getting ready to sell. It is a Brunswick Anniversary Model. It is in very good condition. My earlier post we also have the Titlist Cues as well. Here is a couple of pics. Make me an offer. Very nice table. 4X8. We have more pics if you need them. I will be going up there in a week or so to try and get pics of each and every pool cue as well.