I came across one of these recently (a deal too good to be true).
2005 SR5, 205 K, $2500. When I saw it the ad had been posted 40 min ago.
Crazy low price, but nothing in the ad looked off to me. My girl and I had been leaning towards a 3rd gen after she vetoed the 4th gen for being too wide (we live in the city and would be sharing the car) so it took some convincing, but eventually she caved. By the time I called (about 2 hrs after posting) the car had been sold.
I'm not saying for sure that this was legit, but I've bought enough stuff on CL to know that sometimes people just have no friggin clue what they have.