I believe the pricing changes remain in effect even if you disable the Gemini features in your Workspace admin, as they are now bundled and not a separate add-on: https://support.google.com/a/answer/15400543
Oh, I do hope that there will be an option to reduce the price if setting is off. I've thought of the same thing. And this all reminds me of MS price hike (also with including the AI) -> https://news.ycombinator.com/item?id=42735193