Demetrios Ilyssa Dress Size 4

I have this beautiful A-line strapless dress with detachable train and beaded satin shawl that I want to sell. I wore it once for my wedding, and don`t want to keep it. It is from the Demetrios Ilyssa collection from 2000. It is a size 4 and has not been altered at all.
If you know anyone who would like this, or have any suggestions as to how to sell it please e-mail me. Thank you.