how much does a quarter horse cost
1 Trail riders often choose Quarter Horses which can cost $1,000-$4,000 or saddle mules (half horse and half donkey), which run $1,000-$3,500. 2  Quarter horses are also used for rodeo/barrel racing or working cattle, along with Arabians and Thoroughbreds. Quarter horses are also used for rodeo/barrel racing or working cattle, along with Arabians and Thoroughbreds. 2  These trained animals average $2,500-$7,000, but exceptional animals cost a great deal more. 3  English jumping riders chose Thoroughbreds and other breeds which can start under $2,000 but often run $3,500-$8,000.