Having just gone through this myself, I am sympathetic to your situation. The ones I was finding that were still available were usually way overpriced. The ones priced correctly sold fast. I ended up creating an IFTTT recipe, which scans craigslist and emails me when a new ad is posted for something I'm looking for.
For an example of one seller I dealt with that didn't go so well, someone was selling a 2006 Host Rainier, listed at $17,500. The guy was having his business partner handle the phone calls and viewing, who didn't know anything about it. It had been listed for a couple of months. Immediately after I called to set up an appointment, he raised the price on the ad to $18,500. The ad said it had $8,000 in "upgrades" which were never fully explained to me. We exchanged many emails where I was trying to figure out how much he wanted for it and what condition it was in since the pictures weren't that great and it was a long drive to see it. I never did end up looking at it because he accused me of wanting to "steal" his TC. Ug.
When I found the 2013 AF 990, the experience was completely different. The seller was asking a fair price...I offered slightly less and he accepted...done. I was in Utah at the time so couldn't look at it right away but he agreed to hang on to it for me for 5 days until I could go see it. Nice.
There are good deals out there...you just have to be patient and use technology to your advantage.