Please help me price this 2009 370z

Astrosfan

ok,
I found a 2009 370z base +sport.
One owner, 20k miles, 6spd, 70% left on tires. Dealers says it hasnt been driven hard due to its smooth transmission... wants $27,500. Said he would drop it $100-200 if it would get my business. drive-out around $29k

I was hoping to drive out paying 27-28k....regardless of it being this car or not.

I was hoping to trade my car in for about 6k and put 2-5k down, with a 3.99% 60mo loan, my payments will be pretty low.

I checked both edmunds and kbb. they were several grand off from each other.

Think this is possible?

Thanks in advance for your help.