Revolve takes up to 50% off a selection of its Revolve women's dresses as part of its September Dress Sale. Plus, coupon code "CANDY" takes an extra 10% off, which yields starting prices from $27. Better yet, all orders bag free shipping. A couple of best bets, with prices after coupon:
Sunsmile*2013 via eBay offers this Women's Sleeveless Evening Dress in Black for $5.89 with free shipping. That's tied with our mention from last week 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.