I was going to say, I thought $1200 was a more fair price for her. She's better than a $600 horse here, not what I would consider top quality with her long back and funky hindquarter, but $600 here doesn't really buy you that much. Not for an already started horse. Either a TB off the track (or spelled but not done much), or Standy with a little education. Or a poor quality unregistered weanling. Or maybe a yearling if you're really astute. You get more for your money from auctions, because nobody likes spending up big at auction here... but it's so so so risky, you can't ride before you buy and you're a million times more likely to get a horse that's insane when you get it home and only looked relatively acceptable because it was drugged.
The horse market is in a big hole at the moment but it still costs a lot of money to get a real quality horse.
What I really don't get is why, if your friend has so much money, they aren't looking at pricey, real quality horses?