LightInTheBox offers this Tropical Plant Pattern Linen Pillowcase 9-Pack for $18.99 with free shipping. That's $2.11 per pillowcase, $50 off, and the lowest price we could find. Each pillowcase measures 18" square and features a zipper closure.
Note: This item ships from China and may take one to two weeks to arrive. Uncheck "Add shipping insurance to your order" during checkout to remove the 49-cent fee.