Have been pondering this. We have spent a fortune over the years of various therapies for ds1. Some have worked to some extent but ds1 is always going to be what many in the States call a 'non responder' .
But there's one area which finally is looking hopeful, and in which he is finally making good progress and all the information I have ever had on it and all the help has been completely and utterly FREE!!!!!
In the early years we used to try lots, and cash in savings and fill up credit cards (that we're still paying off) to pay for stuff that had worked for other people. As ds1 became older it became far easier to work out what wasn't going to work for him (even when it had worked really well for other people). Which brought me to the free stuff.
I would so love to set up a social enterprise which offered free/affordable training to parents. There's something wrong about people buying mansions whilst we scrabble around for the money to pay for hope.