This AQ Textiles Optimal Performance 625-Thread-Count 4-Piece Sheet Set drops from as much as $150 to $29.99 at Macys.com. Plus shipping is free. This is the best price we found, and it's a savings of up to 80%, depending on the size you choose. Choose from queen, king, and California king. Similar sets sell for at least $20 more. Choose from nine colors at this price. This set includes one fitted sheet, one flat sheet, and two pillowcases. It is made of a cotton and polyester sateen weave. Sales tax is charged in most states.