So effectively you were asking "Which car will get you the lowest return or allow me to negotiate you below the expected sale price?" and you wonder why he didn't bite??
You don't sound like you wanted to buy a car as much as purchase an investment ... estate agents sell both homes and investments (and home-investments), that's why they tailor deals in different ways.
"Which car will get you the lowest return or allow me to negotiate you below the expected sale price?"
in a sense yes. however I would like to add my placement on value for certain features are unique to me. I wanted them to at least try to give me some offers. Say well we have this for that. but refuse to say any thing on what they were sell. with a real-estate agents they realize ever customer values to many things at different levels. ie a young family values location to schools. A competent builder might not place much as much importance on newness...
this is what I wanted a salesperson for the value they add to me is finding me a product I could be happy with. instead he immediately tried to "find my price" but I had no price for the classification as wide as vehicle.
in they end I ended up getting an used SUV. something I never thought I'd do having a small car for years. with out going into details certain aspects of my life valued 4x4 vehicle and until now with the over supply of used SUVs I never considered owning one.
You don't sound like you wanted to buy a car as much as purchase an investment ... estate agents sell both homes and investments (and home-investments), that's why they tailor deals in different ways.