Shop Undies at 5 for $15 right now at Aerie.com, making each pair $3! Shipping adds $7 or is free with $50. Please note that sizing may be limited depending on style. Stock up on single pairs, like these Outta Sight Thongs, regularly $12.50 and normally on sale for $3.99, to drop them to the $3 price when purchased in quantities of five. This is the best price we could find on them. They come in four colors and feature a total cheek peek. They are low rise and tagless. You can also mix and match with other styles. Sales tax is charged in most states.