The NDIS Pricing Arrangements and Price Limits is the document you will need. It explains the pricing rules and the way that price controls for supports and services work in the NDIS. The NDIS Support Catalogue lists the specific supports, (sometimes called ‘support items’) that have a maximum price. You can download the latest NDIS Pricing Arrangements and Price Limits and Support Catalogue from the Pricing page. https://www.ndis.gov.au/providers/pricing-arrangements