There are a bunch of great suits at your size in B&S. I know cause I am looking for my size and it ends up being in your size.
Nice black Versace sports coat for cheap here too:
Highly doubt you'll get any interest for that item, specially at that or any price.
Specially after having a thread showing how bad the back of the suit looks.
You should just give it away. Even that might take you time.
I don't think the concept of a cooperative medium to clothing style and goods works well for women.
They are more competitive in this arena and their goods are far more rare than ours.
I feel their boards would have a lot more haters and passive aggression. Not a fun place to be.