I'm happy with these...especially god solution for travel pillows that tend to get dirty in the car. The fabric is comfortable and the zippers keep your pillow fully enclosed regardless of size. Also a good place for kids to contain their pj's or stuffed toys.
You can probably find a cheaper dollar per pillowcase protector item, (with some hunting involved), but it probably won't be as of good quality. For this level of quality and durability I would have to pay $**-**locally. Most protectors in this price range I have looked at are either to plasticity, flimsy, and more junky than I care to have in my house hold. This item at the price I paid for it (with a nice overstock discount on my whole order) was a online shopping find.