May I offer a tip? I buy cars for just about everyone in my family so I have bought a few.
When I decide to buy a car and I know what I want to pay I make a real offer.
I hand them cash and say, "count this,, Then I got a question for you" It's hard to hand the money back after they play with it---if it is a fair offer--Or even a little bit low.
If you don't use cash you didn't make an offer you just inquired. When there done just ask "will that buy the car or are we all done?" Then be quite don't speak till after they do.
It's the silent close. The one that speaks first usually looses -- quite effective
I sold cars for a few years and did fairly well
Something else if you want to pop there bubble without looking like a rude person,,, Walk around the car
when you see a bad spot --look at it touch it and don't say a word. They will usually jump and start talking and
devalue the car all by there self ---you don't want to tick them off if your going to be dealing with them.