I just picked up a new SF M2 and M3T on ebay in the last couple of days. Call it hysteria, or fear of the future (prices), or call it what you will, I decided since I was looking to purchase both of those lights this year anyways, I might as well get them now as to not take a chance on paying 25-30% more in a few months. I paid within $10-20 of what I would have paid through TAD or TW or Bulldog or LA Policegear (and way less than SF retail), so I don't feel too bad about the deals, the M2 was on ebay through Bulldog anyways.
I'd much rather buy my Surefire products through one of the dealers frequented by CPF members (as have been all of my SF purchases so far), but every dealer I've tried has been out of all the Millenium series lights, and supply and prices are uncertain for the future due to SF's changing dealer structure and internet pricing policy. It is very likely that in a few months the only way to buy a Surefire on the internet is through ebay.
I'd guess that if Surefire doesn't allow their remaining retailers to discount heavily as some have done in the past, we'll see prices shoot up on ebay as well. Demand seems to be at an all time high, and for various reasons, supply seems to be rather short. I don't need an economics degree to predict what will happen to prices.
-Keith