What is GM NOS wrap around spoiler worth? Fits 87 and newer Formula and TA's. I have one. May sell it.

 

I'll answer your question with a question. How badly do you need to sell it? Concours and show competition minded owners are more likely to pay higher for the piece since originality is more important to them than practicality or durability. That said, the piece better not be showing any signs of deterioration at this point if you want top dollar, so how and where it was stored all these years is going to be an important question to a potential buyer with a show car. People with "driver" quality cars may not be willing to pay as much for a piece that is destined to suffer the same fate as the one they are seeking to replace. The aftermarket fiberglass spoiler is a more practical, permanent solution to people with "drivers". So if you want top dollar, whatever that is, you need to be willing to sit on it.

I can also tell you this. I own a DeLorean as well. Left front fenders have been unavailable for over 25 years, while right front NOS fenders are plentiful. People who possess a loose, undamaged left front fender typically ask four times the value of the right fender for it, and they usually sit on those left fenders for years if not forever. And in the case of the DeLorean there is no aftermarket solution for the left fender like there is for the Firebird spoiler, so just because it's a rare, limited supply piece it does not mean you are going to have people lining up to pay crazy money for it.

I suppose another way to answer your question is to say it's worth how much someone is willing to pay you for it at a particular point in time. eBay can answer that in a week or so.

To find a value range you may want to start looking though the archives on this site and on eBay to see what such an item has sold for in the past.

Those are my thoughts, for the little they are worth.