I have not read all the posts in this thread, but I thought I should share my two cents nonetheless.
Pricing of horses, of any gender, age, training level or even breed, is obviously a very subjective matter, as a horse will only be worth what people are willing to pay for it.
Being in Europe, I am not as well versed in breeding of Sport Horses in the USA as I would like, but as far as I know there is still a long way to go - I can imagine you don’t have as many breeders with horses who have proven themselves in sport as one would like.
Well, in Europe there are literally thousands of breeders to choose from. And unlike what happens in the US, there are more than a hand full who have horses competing at the highest level, or who have sent horses out to auction.
So there are millions of horses being born each year. Odds are a few are absolutely astonishing. All the others still need to find an owner. And now the law of business comes to play - there is plenty of offer of very nice riding horses, so in order for all of them to find a home, prices need to be lower.
On the other hand, you have the US, where a few hundred horses are born. A few of them may be very good, one may even be absolutely breath-taking. But because there is more demand than offer, even what would be considered an average horse by our standards can find an owner for a higher price than he would here.
High offer > Low prices
High Demand > High prices
Yes, its a hassle to come to Europe in search for a horse, but odds are you will find something really nice for a very sensible price. And its an experience and adventure you’ll probably love. I know I loved going to Germany to buy my current horse.