Just to add my story to the pricing data. After searching for 3 months, I just purchased a Silver 06 LX 470 with 119k miles for $18.9k I was patient and waited for my preferred year and color with no accidents and full service history. I had alerts set up with all the car buying sites (auto trader, cars.com, car gurus,
ebay, etc).
This one was listed at a Land Rover/Jaguar dealer with no price or pics and I ended up making a deal to buy it the same day they listed it. While I waited for the pics, Carfax and price from the dealer, I looked up the service history at drivers.lexus.com. This one had every service done at the same dealer. Carfax came back 1 owner no accidents, local CA vehicle.
Pictures were bad and taken with cell phone, but I decided to roll the dice and go with my gut. I had to commit and send a deposit on the spot. I paid full asking price. Truck was 500 miles away and I booked a flight to pick it up 2 days later. I was blown away when I got there. This truck seemed almost new. Paint was 9.5/10 zero dings. Interior was 9/10. Dealer had installed 4 new tires. The previous owners had traded it in on a new Range Rover. They claimed I was lucky since they had a lot of offers in the few short days it was listed. No way to know if that is true, but I suspect it is.
A few weeks earlier I checked out a near by dealer that specializes in Toyota and Lexus trucks/suvs. They had an LX, same year, same color with almost 40k more miles. They were asking $22.9k. I said I thought $20k seemed fair and they literally laughed. They claimed that 06 and 07 were rare and going up in value. That one is still for sale.
Be patient, find a good one, and move fast.