She is gorgeous! And short, too, so you'll want to for sure advertise her to PON breeders as well.

With her at mid-list ABLB I'd place her brood/embryos around a mil each. For sale, I'll usually look at a mare's brood price and multiply by a few months (or just like, 2 months, if the mare was already 15), but with her still quite young I think I'd price one like her around 10 mil. You could also try a forum auction with a starting bid of 10 mil and see if PON breeders want to jump in.

The only hesitation is her production, and that there are 6 other higher ABLB appaloosas to compete with. But she's been largely un-svenned, so she has potential to climb even higher if people will start regularly svenning her.