Brightguy.com has them for 94.95. BG is highly rec'd on this forum. Of course they don't answer my emails, but hey, the prices are very good.
Brightguy also does a much better job describing the light. It's 20 watts, so the idea it's 500,000 is kinda goofy, but still it'll be a nice bright light. Seems like a nice convenient set up. Lead acid batteries are used, which for 100 bucks seem like the cheap way out.
If you want to save a few bucks, you can mod a light to do the same for less than half the cost. Just get a Thor and put in a 20 watt bulb. On the other hand, if you value your time, and don't enjoy messing around (but then I'm not sure why you are a "flashaholic" on CPF) you should get the light!
lots of options, /ubbthreads/images/graemlins/thumbsup.gif
cheese