I've been on here long enough to see that too many people are of the mindset "I not going to worry about *only* $500".
Way too many people don't feel it's worth the time/effort/bother/whatever. They're wrong it feeling "what's $500 on a $30,000 car? They don't realize that regardless of "percentage" saving, another $500 saved on a $30,000 is the same as $500 saved on a 75 inch TV. - it's still the same $500 in your pocket. If you knew that you could get a $1,500 TV for $1,000 if you waited 2 weeks, most would. But they make the car buying process such a hassle that people justify themselves in to spending $500 more. Or worse - "oh, it's only $15 a month more". Dealers love idiots like that, the ones that just bend over without barely being asked to.
Dealers know (or have you thinking) that you want want to buy a car more than they want to sell one, when the truth is just the opposite - you just 'want' to buy one, but they 'need' to sell one. You're not going to go hungry if you don't buy a car, they might.
Sorry if I offended anyone, but everyone comes here for "is this a good deal"? but few want to put in any additional effort. In that case, we can't help you.