I used to love horsey books... Read the Saddle Club, Jinny books, The Silver Brumby etc,but there is one I cannot remember the name of and have googled to no avail.
Basically the girl found a horse in a field by her house, and bought him off the farmer in exchange for her mums Pyrex dish and a paisley scarf!! Those are the only details which stuck in my mind, anyone remember it??!
Typical life of a horse mad child whose parents never bought her a horse 