how much are horse trailers
1 A slant-load trailer can be either bumper pull or gooseneck, hold 2-8 or more horses, and cost $5,000-$30,000 or more, depending on the number of horses and the trailer's size, weight and materials (fiberglass, steel, aluminum).  A horse trailer with living quarters can cost $35,000-$100,000, depending on size and level of luxury.