Risperdal is used to treat Autism, Schizophrenia. The generic version is called Risperidone. The average Risperdal cash price is about $225.04 for a supply of Tablet 0.5 MG 30 pcs. You can reduce your Risperdal cost by up to 75% with our free Risperdal discount card. Bring it to a participating pharmacy near you to save on your prescription medication.