is this a good offer on my Z
 

I got offered 23k for my Touring/Sports/Navigation 7AT '09 370z with 35700 miles. The offer was for a trade in. Is it an ok offer?
This is in SoCaL

I did some research but theres some really expensive ones and some cheap ones

Edit: I should mention, my car is in really good condition

Seems a little low to me, but I'm no expert.

that's low. was that their first offer?

yes that was the first offer. How much should i expect for it on a trade in?
25k?

That's seems a little low for a trade in, but you are in a different market. I think it should closer to $25k in your area.

It's around $24,800-$25,000 in NY for trade-in...private sale is around $25k-$26.5k