Value Lexus found on Craigslist

• 'oo GS300 Silver, 145k miles, $9,000 This is a one owner in Pheonix
  
• '99 GS400, 117k miles, $11,900. This is in West LA
• '01 GS300, 158k miles, $12,000. In the Inland Empire area of SoCal. also original owner.
• '04 ES330, $15,590 72k miles. This is a little out of my search criteria but it looks like a good value after all it is still a Lexus. Maybe the ongoing ES transmission problem is the reason for the value.