A reader pointed out that the link I had for instrument costs (http://futureplanets.blogspot.com/2009/12/what-instruments-cost.html) pointed to a document that didn't have instrument costs. There were several reports on possible Mars Science Orbiter goals issued within a couple of years, and it seems I pointed to the wrong one. This is the correct link:
The table with the instrument costs (from page 48) is reproduced below. Clicking on the image should open an enlarged version.
Oh, and Merry Christmas!