Why so many Power plants for sale?

Seems like there are a lot of PS Audio power plants for sale. I have a P300 and I love it on my front end, and was contemplating a P600 for my video system (a Mitsubishi RPTV, Lexicon processor, Pioneer DVD & PSE amps) but was worried about the power consumption here in Ca. Has anyone compared the Hydra, Power Plants, Exact Power, and Equi=Tech. I know I have a power drop issue (PG&E wants to drop the voltage to 110 - 114 Volts) and the Power plant and Exact power can help there. The Hydra does improve the sound on high end systems, but is not balanced power and does not adjust for voltage. I've not heard the Exact power or Equi-tech, has anybody put them on video systems? And back to my original question, why are there so many PPs for sale? I love the one that I have, but can't use it for video.
Power regeneration like on PS audio powerplants is good for low power sources but not for power amplifiers or expencive tube CD players or phono-stages since it doesn't have that capability to deliver enough power into. In fact it seems more and more not to have any use...
They're very good units, but are inefficient because they require so much power themselves that even the biggest ones really don't work on large power amps. I had to use a Richard Gray unit for those. Eventually it was just easier to get rid of both and switch to a Burmester 948 (expensive, but takes the whole system).
I agree with jbweaver, I think they have sold lots of them and many people(a couple I know) have upgraded to bigger ones to put more stuff on them. I have a P600 and really love it. I have everything except my power amp hooked to it (including my Pioneer Elite Pro97 rptv). It makes a huge difference for the tv. Maybe you can just get another p300 for the tv, or upgrade to a p600.
I had both the P300 and P600. Both had multiwave, and I ran them both from dedicated outlets. The P600 was switched to 220V, which made it perform better. Both were fed with high quality power cords. I was using the P600 for my amp and analog, and the P300 for digital. Then I tried the Sound Application C-FX. My system totally opened up, and I realized how the Power Plants restrict current flow to audio equipment. Yes, they quiet things down, but they also mask a lot of nuance and low level detail. Recordings now had space and venue that was lost with the Power Plants.

Then I tried the new Audio Magic Stealth. I didn't have much hope for this lightweight power conditioner in a plastic box, but compared it to the C-FX at the urging of it's designer. WOW!! It smoked the C-FX. Out went the C-FX and in went two Stealths to isolate digital and analog. This is the best I've found. The silence and black background is stunning. If you follow Soundstage, you'll see that some of their reveiwers are using them now in their reference systems. The owner of Audio Magic hasn't advertised these things, and he can't keep up with the demand from word of mouth.
Glreno, I saw your post concerning the Audio Magic Stealth. It really blew away the CF-X. I wonder if the CF-XE would complete better. I'm in the process of selecting a plc and was wondering if you could provide the main difference in sound when you put the Stealth in place. Was one Stealth better than the CF-X or did it take two? Was also wondering when you installed the second Stealth to separate digital, was the drop in the noise floor significant? What is the list price for the Stealth and do you need to but directly from Audio Magic? Thanks in advance for any info.