Service dogs for autism?

I recently came across some information involving service dogs for kids with autism! This was fascinating to me, it makes perfect sense, although I never would have thought of it! After spending most of the night and morning researching this I have found a lot of useful information on the subject. My husband and I have always noticed Grace LOVES animals and dogs especially. Service dogs with autistic children help to calm them down during meltdowns, are trained to help stop a child from running off, or to alert a parent in the event a child does run away, and are also trained in search and rescue! Some of the websites I have looked at talk about dogs having the ability to even redirect a child who is stimming, or to help with sensory overloads as well as many other things! As you can imagine the cost for something like this is very high! I have found prices ranging from $6,000-$16,000! In some instances it can be even higher! There are places you can contact that will assist you in training your own service dog as well for a much lower fee. The breeds they look at are larger breed such as labs, german shepherds, and rotts along with many othe herding breeds. They look for loyalty (but not protectiveness as this could be dangerous in a dog that is exposed to a lot of people) which these breeds are known for. I am very interested in this topic and would be interested to hear your feedback on it! I am going to look into some research in it and possibly look into one for Grace! Some of our longterm problems we have had are aggresiveness (she often hits herself and others when she is upset and sometimes when she is sensory seeking), wandering off, a lack of a sense of safety (she will jump off of objects way to high for her or walk into situations completely oblivious of danger), extreme tantrums, anxiety when outside the house, and a reluctance to interact with other people. Everyone of these issues where addressed with service dogs and many children had greatly reduced tantrums, less anxiety, better sleep, and a whole list of other benefits! What are your thoughts?