Groupon offers Women's Day-to-Night Dresses
in five styles (Sleeveless High Neck Twist Front/Charcoal pictured) for $15.99. Coupon code "PERKSPOT5" cuts it to $15.19
. With 3.99
for shipping, that's $40 off list and the lowest total price we could find. They're available in sizes S to L, although not in all size/style combinations. Deal ends October 3.