Purchased "authentic" Star Trek costume from That's a Wrap. How do I know it is genuine, and its value?

Question

I purchased the costume worn by Dr. Crusher (Gates McFadden) in the movie Star Trek: Insurrection. I purchased it from "Its A Wrap," which near as I can tell is a reputable compnay. For what it is worth, it came with a certificate, and it seem authentic.

I am interested in selling it. Is there any chance it is a fake, and how can I determine its value.

Any help appreciated.

Answer 1

Ask the store in Burbank/West Hollywood to type up a certificate of authenticity or somesuch.

Answer 2

The Star Trek auctions site should be able to help you determine the value.