I have recently come across a brand new (<5hrs on it) laser-wave 473nm, which does 400 to 450mw depending on who tests it. The info for the laser is at http://www.laser-wave.com/en/2009/0121/article_19.html, it comes with the (super small) oem style driver and a 5v universal power supply as shown in the laser-wave site. The laser is still under warranty, so if it decides to stop working before june or so next year it can be sent back for a replacement.
This is one of the best 473nm lasers you can get, it cost just under 4 grand from laser-wave.
I am asking $3000 for it, but am open to offers/trades/intense begging
I am headed off to school friday, if you make me an offer by then I will include a free 250mw 635nm laser with the auction!