Got my Prokhorovka! box today. While I like the feel of the maps, and the scenario cards are OK, I absolutely hate the flimsy paper of the (unpunched) rules pages.
If it was a matter of keeping costs down, I think the extra counter card could easily have been cut - include the German counters either in black or (preferably, since that's the easily available color) blue. Printing the rules on paper that can be manipulated without fear of damaging it is, IMHO, an absolute must - especially since the rules are pretty long and people will need to read them.
BFP tend to print their module rules on similar paper, but they also make them available for download. I really wish Advancing Fire would do something similar.