Austin INFINITI

My husband did a trade in for a G37 2010 for a 2013. 2013 quoted at $27,719 when they are selling them for $25,500 which is the Dealer blue book. Gave him $13,000 for 2010 which should have been $15,500. Salesman said he wouldn't take advantage. I said, "Sure you would. That's your job. Is to take advantage of the consumer." He said, "Well sorry that's what Joe agreed too. We didn't charge for the the free tint. You can bring the car back & we can work a deal." I said, "Yeah we bring it back. You might pay it off but we loose the $21,600 equity in the 2010. We only had 8k due on the 2010. Now we owe another 26,880 over 48m. So we're going to pay $48k over 7yrs & get only one car. What kind of deal is that?"