If the stallion is within a one day trailer ride, it might be cheaper to transport the mare. The board on semen is more than just the container. Shipped semen puts the pressure on to have the best mares. You have to have the mares because the bottom line is the thing that improves get. You no longer need the best stallion, now the competetion is to have the best mare.
Frozen semen is a mixed blessing.
Frozen semen of a deceased sire is a speculative nightmare. Speculation on frozen semen has mind boggling legal aspects. There are major insurance considerations with frozen semen. Frozen samples may solve the timing problems with shipped semen. There was no significant difference in the statistics from Question E. about the roll of the veterinarian in the artificial cover process.