Are you the GA female member that inquired about buying a Z in a previous post? To answer my question I think you are. Did you take anyone with you for help etc.?
Can you share the final buy price and car, package etc. on your deal? Those so called add on would be included at no cost if it was me. If not I would tell them to shove it on the 314.00 add ons. On a more professional dealing I would tell them thank you for your time and walk. Pisses me off to hear a salesman & dealership running an unexpected extra's on anyone male or female. I would walk on this dirt bag. period!
These cars are out there. Don't hurry yourself. Look at some other Z's. You might even try some dealer member contacts listed here on this site. They can PM you some quotes etc. Again don't rush it. Sorry for the soap box rant.
This page might be a little dated etc. but can give you some general info on fees etc.
http://www.carbuyingtips.com/car3.htm