Well that being said and if you truly can't afford methadone and there is no cheaper clinic in your area and none of them are willing to offer discounts to people who need it and you want to be on Opiate Replacement Therapy I guess suboxone is your main option. You are going to have to call around about which suboxone prescribers take insurance as well as call pharmacies to see how much the suboxone will cost thru the insurance you are trying to get.
Here is the link to the suboxone savings card.
Savings Card | SUBOXONEŽ*(buprenorphine and naloxone) Sublingual Film (CIII)