Have you ever tried an "oxygen pillow"?

I’ve heard advertisements on the radio for this pillow from European Sleep Works and would like to know what kind of experience users have had with it.

Do you know anyone who has used it?

[Edit] Obviously a person wouldn’t contemplate using it unless the person had severe enough problems to think some relief would be worth the price. This question pertains to whether the pillow delivers the promised relief and not to why a person who didn’t need one would buy it.