dont forget this is costly "pet'! + time consuming!
if youre ready have the time and want give of youreself, try some rescue organizations or the local county shelter, yep, the dog pound gets horses too! my friend got a papered QH stud..huge pedigree, from the shelter for $200! he was "foreclosed" upon!
Check sites like
horsetopia.com or dreamhorse.com
I've found my horse from horsetopia.com and my friend found her horse from horsetopia.com. They're both great sites and you can customize the searches to fit your budget, breed preference, discipline area and locality. :]