Sunsmile2013 via eBay offers this Women's Sleeveless Evening Dress in Black for $5.89 with free shipping. That's tied with our mention from a week ago as the lowest total price we've seen. (It's currently $3 below the best price we could find for a similar dress.) It's available in most sizes from S to XL.
Note: This item ships from Hong Kong and is expected to arrive in three to eight weeks.