I have 9 double chests of horse eggs with speed between 100 and 115. Jump and health stats are various, but I know at least half have 70+ jump and 20+ speed on the same horse. Many have as high as 87 jump or 27 health. Could be useful for breeding, but if you're just looking for leather, they're also useful for that. I will sell the whole thing for 15k, which is about 30r per horse I believe.