In 2012 I traded in a 2003 Honda Accord EX with 140,000 miles on it in very good condition. I got $5,600 in trade value from the dealer (not wanting to sell it myself because it had some issues I didn't want to fix and didn't want to not tell a buyer about). One week later, I saw it listed on the dealer's website for $9,995! They probably just washed and cleaned it up! Even if they sold it for $9,000, and the buyer thought they were getting a good deal, they still made $3,400 on the trade. In fairness to the dealers, they don't make all that much money on the sale of a new car, and tradeins and service are the big money makers for them.