When I hear someone tell me they got a horse for free my thoughts are do they really know what it costs to feed and take care of a horse! A free horse can be a good thing, but it can also turn out to be the worst experience you will have owning a horse.
Some of those free horses have either health or behavior problems that could cost you a lot of money or you may get seriously hurt. Most of the time you usually don't find a free horse that is well trained with no health or behavior problems.
Years ago a friend of mine got a free miniature horse. This miniature had run loose in the pasture for a few years and was a stallion. She was so excited that she got a free horse. When she got the horse home she soon discovered that he was a handful, needed training and also needed to be gelded.
She took the horse to the veterinarian had him gelded which cost her $100 at the time now it is more. She also tried to do the training on her own, but soon discovered that she could not handle him because of her inexperience. The miniature would rear up at her, try to bite and would also try to kick so she had to send him to a trainer.
After two months of training, she was able to bring the horse home. She was fortunate as good trainers usually want a horse for three months. The investment for training at the time was $300 a month for a total of $600. Soon after all of this she had to move so until she found a place to keep him in her new location she had to board him for two months.
Moral of the story free horses are not really free. This lady would have been better off saving her money and investing in a gelding or mare that was gentle, had some training, and was something that she could handle.
Horses range in price from low to very high and some think that purchasing a horse is the most expensive part, but it's not. The investment you put into the horse year after year with feed, hoof care, health care, equipment etc, adds up and will soon be more than the purchase price.
Do your research before getting a free horse you will be glad you did!