PS Audio Ultimate Outlet. Worth Investment?

Do these really work? I see a lot of them for resale on Audiogon and am wondering why everyone is getting rid of them. I'm considering spending under $1,000.00 for power conditioning. Are there better products at a similar price? Thanks.
the Reason you see alot of them for sale, cause quite a few sellers are buying the Exactpower-EP-15
If you think power "conditioning" you'll be better off with a PSAudio PowerPlant (see their website). The PS300 was the best investment under 1k in relation to the improvement in my system. Try it - they have a money back guarantee.
Good luck!