Ending today, when you buy four pair of Gilligan and O'Malley or Xhilleration panties, you get two free. This drops the price from $5 per pair to $3.33 each when you buy six for a total savings of $10 per six pair that you buy. Available at Target, there are many styles to choose from, like this Laser Cut Bikini pictured, and shipping is free. Sales tax is charged in most states.