Target has some really great prices on dresses. A lot of them are on clearance, so you're getting the lowest price of the season. There are $11.97 mini dresses, $12.92 midi dresses, and $18.24 maxi dresses. Sizes are selling out, so you'll want to purchase what you want before they're sold out.
Remember that it's free to get the additional 5% savings and get the lowest price possible on all your purchases. You only have to apply for a Target Circle Card in prepaid, debit, or credit card form.