Freelancers - how long does a Shopify SEO audit take you?

I have a quick question.

When you do a full Shopify SEO audit for a client (technical + on-page + content + keywords), how long does it typically take you?

I've been doing these for years and it used to take me 6-8 hours per store. Eventually built a template system that cut it down to ~2 hours.

Do others have similar systems, or if everyone still building audits from scratch each time?

Also, is there demand for this? I'm considering packaging my audit template as a product for other freelancers. Would you buy something like that or prefer to build your own?