Hi there, @Lopez-signs. Welcome to the Community.
I appreciate you reaching out. I know it would be convenient to update the price of a saved item, especially when costs change over time.
In QuickBooks Self-Employed, saved items on invoices cannot be edited once created. This is how the system is currently designed.
As a workaround, you can create a new item that reflects the updated price. To help keep your records organized, consider giving them a slight name change. For instance, if your original item is named Food, you could rename it to Food1.0. This way, you can easily differentiate between the two on future invoices.
If you have follow-up questions, please don't hesitate to click the Reply button.
