I think I’d also have fallen flat on my back if I’d been charged between Norwegian kroner 250-300 for a printout of my hospital tests. I can agree with Norb on the reason why they do it!
As for what your current blood-test shows, I think that the bone marrow function has to do with the number of monoclonal B-cells, which again has to do with how much IgM is produced. If the Rituxan works, the number of B-cells will go down and the IgM accordingly. They have to monitor your liver function to see how it copes with the medication.
On the other hand, I can fully understand the fact that you want to know if your IgM goes down as soon as it is available, and that it should be montored and followed as closely as possible. My blood tests have always included the different globuline-levels.
All the best from