No one can even begin to answer that question.
And if your breeding to make money, don't. LoL, You'll be lucky to barely break even after stud fees, vet fees, feed for mare/foal etc.
There are way to many variables to answer this question. Just because the foal will have 3 top ten APHA horses in her pedigree doesn't mean squat unless those are the lines people are looking for. I do a lot of looking at horses online and many have great horses in their pedigrees and they are going for next to nothing right now.
It all depends on the foal. The color, the gender, the training level, the disposition, the athleticism, the trainability, the show record, the potential and yes, the pedigree.
It also depends on the economy. Right now isn't the time to be breeding horses to sell. There are SOOO many of them out there right now that needs homes and aren't finding them because many people can't afford horses at this point in time.
Ontop of that, you have to hit the right person. Just because you produce what you think is a great foal, doesn't mean other people are going to think its great and pay what your asking. You have to breed for what's hot on the market right now and unfortunately if you don't reach that market, you might have a yearling, then a 2 year old, then a 3 year old on your hands. Or it'll be selling for dirt cheap.
"The greatest pleasure of a dog is that you may make a fool of yourself with
him and not only will he not scold you, but he will make a fool of himself too."