Me and my wife planning to buy car we both make good income. only issue is 1 deliquincy in credit dealer is te

Dealer is giving us about $550 to $600 per month installment quote on our New Honda accord 2008. I know honda accord is great vechicle but is this pricing good? usually for new car it runs about $300 to $400 depending upon your credit rating. My credit ratings are about 650 to 700 points from all three creditors equifax, and other two but still he is giving us $550 to $600 monthly plan on accord. please advise on this. (No negative critisim please) thanks