We store them in Google tables and make them available to clients. Formulas and filters are set up in them, the grand budget already includes "hospital average" prices for items from the cleanup estimate, finishing work and materials, and you have the option to choose from three price segments (Basic, Plus, Premium). We never start detailing the design without discussing the estimate with the client, this is one of the most important meetings during the entire design process, it is what allows us to avoid situations of "everything is beautiful but very expensive, offer everything twice cheaper" when the project is already ready. It is better to hear this at the beginning of the project and to offer the client to determine on which specific items they will decide to save money.