Keep your letter brief and to the point. Be sure to keep a copy of the letter for yourself before sending it to the service provider in a form you can track [hand-deliver it with a witness, registered mail, courier, e-mail or fax with confirmed delivery].
Ensure you are familiar with ABA/IBI and its philosophy before entering into a contract with a provider.
Deal with a provider who has a good reputation with other families; one who is known to be trustworthy.
Compare prices among providers.
Get all contracts or promises in writing and keep all documents and receipts.
If you don’t understand the contract, ask to have it explained so that it makes sense to you.
Keep down-payments to a minimum; 10 percent of the total estimate is fair.
Remember, if it sounds too good to be true, it probably is.
No provider can claim that they can cure autism. Research shows that whether or not autism can be cured is yet to be proven.