I remember visiting a Holstein herd in Ontario, several years ago and seeing a cow that had produced over 2 million in offspring and embryos and she was only 6 years old. I have heard since that this herd had several cows like this today. I will always remember attending the Holstein sale at the Royal Winter Fair in Toronto over 30 years ago, and seeing 250 lb Holstein bull calves (that looked like any other pail fed dairy calf) sell for $250,000 to $300,000. Most went to Japanese buyers back then as well. Japan is a huge market for dairy genetics.