Quote: You can even do the conversion yourself if you're really brave.
Note that you will need a replacement filter - if you just take out the anti-alias filter (which incorporates IR blocking) then the focal plane will move forward by about one third of the thickness of the filter, and focusing will not work properly (the image will be out of focus, even in visible light).
Better to get a replacement done by a professional outfit who will be able to access replacement filters in bulk more cheaply than you can as a one-off, who will stand over their work and who will recalibrate the colour balance so that the camera can still be used for normal photography.
BTW lots of the companies that purport to do this work in fact just send the cameras off to Baader (Germany) or Hutech (USA), it occurs to me that it is sensible to go direct, Baader for instance have a waiting list but tell you when to send your camera in rather than just sitting on it.