What's interesting and a little depressing is to compare contemporary PDF sales figures to those for GDW's old print products. The numbers are available in
DriveThruRPG's guide to v1. The smallest print run for a 1e module was White Eagle, at 5,100 copies. For 2e, the low earner was the East Europe Sourcebook, with 4,100 copies. Obviously, not all of those sold at retail, but it illustrates how drastically the market has contracted over the game's lifetime.
(I seem to recall that the print run for the 2013 core book was 5,000 copies, but it's been a while. Compare that to the 1e boxed set's 97,518 copies or the BYB's combined 39,937 copies between 2.0 and 2.2...)
- C.