SheIn again offers the SheIn Women's Long Sleeve Backless Zip Bodycon Dress in Black for $29.99 with free shipping. That's $18 off and tied with last week's mention as the lowest total price we could find. It's available in sizes S to L.
Note: Uncheck "Add Shipping Insurance to your order" during checkout to remove the 99-cent fee. Additionally, this item ships from mainland China, with an estimated three to four week delivery time.