sounds to me like you were just trying to bargain with him to get price down and he just wasn't interested in lowering the price. Then whenn you made the coment about "if I am going to pay full price I will just get it from a dealer..." I would have been done with you to at that point. That coment would iritate me I think...not that you are wrong, just probably rubbed him the wrong way.
That's just my opinion.