* Different types of sales: There are sales of racehorses, show horses, breeding stock, and even horses for everyday use. Prices vary significantly depending on the purpose and pedigree.
* Private transactions: Many high-priced horse sales are private and not publicly announced.
* Value fluctuations: The market for horses can be volatile. A horse might be sold for a high price one year, but its value could change drastically over time.
That said, here are some noteworthy examples of expensive horse sales:
* "Fusaichi Pegasus": This thoroughbred racehorse sold for $70 million in 2000, making it the highest price ever paid for a yearling at the time.
* "The Green Monkey": Another thoroughbred racehorse, sold for $16 million in 2006, making it the most expensive yearling ever sold at auction.
* "Sea The Stars": This thoroughbred racehorse was bought for $40 million in 2010, and its stud fees have since generated significant revenue.
* "Frankel": Another famous thoroughbred, Frankel, sold for an estimated $200 million in 2013 when he retired to stud. This value is based on his potential earnings as a sire.
It's important to remember that these are just a few examples. There are likely other horses that have sold for significant sums, but the details are not public knowledge.