Anytime, from Shopify billing (100% native) — the change is instant and prorated. Your quota is the number of pages Octopus maintains for you: it doesn't reset monthly, it frees up. You're warned at 80%. At the cap, delete pages you no longer need (their slot frees up immediately, with a 301 redirect) or upgrade. Failed keywords never consume quota; a separate attempt cap simply protects the service from massive no-result imports. Cancelling returns you to the Free quota (10 pages); your already-published pages stay live in your Shopify — Octopus never deletes your content.