Lands' End offers its Lands' End Women's Short Sleeve Boatneck Shift Dress
in five colors for $19.99
for shipping. That's $29 off list and the lowest total price we could find. It's available in regular and petite sizes from XXS to M, although not in all size/color combinations.
Of note, it's also available in tall sizes from S to M and plus sizes 2X and 3X for $5 more, although not in all size/color combinations.