stud fees

I saw one report (from his birthday March 27 I think it was) that said he had sired many hundred foals in his career - 900 or so, I think it was - and that the going fee was $300,000 per (yes, that's five zeroes). Also that at age 28 he was ninety or a hundred or so in human years. Also that last year he was bred six times and that four of the mares were carrying foals as a result.

But I'm still surprised that he only ran seventeen races before his career ended. Is that typical of thoroughbred horses? Even if they're Thoroughbred Horses like this?