🚀 Quick Takeaways Metered, not monthly: A pay as you go SEO tool sells credits or per-call access, so a month without work costs nothing. Entry points differ sharply: DataForSEO requires a $50 first deposit, while FlexQueries runs a $0/month plan with reloads from $5. Per-action prices are tiny: A 225-row keyword report costs $0.15..