If you want to go spottie shopping go to
www.spotties.comThere are listings for appaloosa, knabstrupper, british spotted ponies and minatures.
Plenty of breeders out there, and plenty of quality horses too.
Its really a matter of pick your colour, then pick your pattern!
Of course height and gender may come into it somewhere.
Sue Feast has a lovely filly for sale on this site, she will make a lovely western horse, her breeding is impeccable.
Have fun.