And I'd recommend you visit the overflowing offices of a few shrinks scamming patients by charging $100-$150 for five minute appointments to provide the monthly refill for adderall.
Any disorder or disease that requires a potentially addictive medication will inevitably have crooked doctors - this is seen as well with patients requiring Morphine or Codeine. This crookedness is a separate issue from the illness, and is not relevant in a discussion about neurobiology.
In the UK, I didn't have to pay anything for refills of concerta. In NZ, I only had to pay the GP who gave me a referral to a free psychiatrist for methylphenidate and dexamphetamine sulphate.
In both places, it has been a relatively long journey to get medication. They were keen to try to resolve my issues without drugs - it was about half a year between when I started seeing a psychiatrist and when they suggested medication.