Gorgeous Rena Koh Wedding Gown - Never Worn

I have a gorgeous off white size 10 gown from Rena Koh, Never worn, I bought it off the rack. It has a draped front skirt, the bodice has sequince and one inch straps that go up and around the neck. The back has a small train, gorgeous Duetch Satin and a sheer back. I changed my mind at the last minute and wanted white. It has not been altered. This dress retails for $3000, I paid $800.00 and am asking the same.