$885 above Based on the average price for a 2006 Cadillac STS for sale in the United States, this is a good deal for this vehicle. 2006 Cadillac STS $3,950
$327 below This vehicle is priced within 8% of the average price for a 2006 Cadillac STS in the United States. 2006 Cadillac STS 163,301 miles / $3,999
$65 below This vehicle is priced within 1% of the average price for a 2006 Cadillac STS in the United States. 2006 Cadillac STS 70,661 miles / $7,995
$2 above This vehicle is priced very close to the average price for a 2006 Cadillac STS in the United States. 2006 Cadillac STS 102,267 miles / $5,000