I saw that one on Craigslist the other day! That's what I paid ($20,000) for my last TJ Rubicon with 60k on the odometer, super clean, and no rust.
My current Rubicon I stole for $17,000 from a local dealer here in Oregon who didn't know what they had. 55k miles, no rust whatsoever, one owner, and in great condition.
I paid 16k for my Rubicon with no rust and 56k miles on CL private party, pretty close to
@Chris. That's about the best deal I found and I immediately acted on it. The deals are out there but you have to check 2-3x a day. I set up auto alerts in CL and browsed the local dealer websites 2x a week. Took me a while but I got myself a good one. The information available on this forum helped me make a good decision. I really wanted a 04 Rubicon in dark green, but ended up with a black 05. I don't regret buying my Jeep one bit whatsoever. I wish I had gotten it much earlier infact but ah well.
Things to check on Rubicons:
0. Rust, rust, rust - no matter how sweet the price is, or how nice the body/interior looks, walk away from Jeeps with heavy frame rust. It'll really cost you on the long run.
1. Make sure the vehicle has Dana 44 both front and rear with 4.10 gears. I've heard of unscuplous sellers replacing the axles with ones from other TJ trims and passing them off to less careful buyers.
2. Make sure both front and rear lockers work.
3. If buying 05-06 models, read about OPDA issue and make sure you are aware of how to check for it. My TJR did not have it, but I replaced it with the Crown replacement after reading about it here.
4. If the vehicle is lifted, make sure you get information on what components are used. Read
@Chris very detailed thread on lifts and understand what's on the vehicle . You might want to replace/upgrade anyway, but improperly done lifts with bad components can lead to vibration/wobble issues that may be pretty expensive later on.
5. Have a good mechanic you trust check the rear main seal. Mine had a leak as most Jeeps but I was able to use this to bargain a bit on the price.
6. Wheels and tires - once again you might end up upgrading anyway later on after purchase, but make sure whatever you get is not bottom bin stuff. Mods and upgrades post purchase gets expensive and you can spread out things a bit if you don't totally hate what you get.