A team roping horse trainer tells me that he used to buy started horses with some ranch experience but green for $3-4000, then sell them for $8-12,000.
Now he has to pay $8-10,000 for one and about a year later, after all that training and ranch riding he sells for $15-18,000, other than the rare very pretty super star those may bring over $20,000.
He thinks buyers just have to get used to the new prices, himself too, being on both ends.
It takes that much $ to make it worth to train and that training is what buyers of finished horses that don’t need professional training any more are paying for.