I don't understand your question. SchH 3 is a title earned through competition. Are you asking if you can buy a SchH 3 dog? Are you asking if you can have your dog trained to SchH 3?
If your looking to buy a SchH 3 titled dog, I imagine it would not be cheap. You're talking about a dog that has been through years of concentrated training. Not just any dog, but a dog with, at minimum, a relatively strong temperament. A good SchH prospect puppy from a reputable breeder (with only some socialization and no formal training) will cost $1500-5000. A started green dog, showing potential for work and minimal formal training can be upwards of $5000-10000, depending on where you get it.