This is ~1 hour of software engineer, ~2 hours of technology generalist time. Time is non renewable, and humans have a cost. If you're an agency, business, whatever, and have the need to make something WP static via Hugo, this is a reasonable cost to solve the problem quick.
Pricing and product market fit discovery is a process. Solve the problem, make it maintainable, make it perform. You are on a VC startup accelerator funded forum where a component is encouraging makers and builders to solve problems (sometimes, for money), after all. Encouragement and constructive feedback is both cheap and kind.