[esw]

Ditch the free plan and make it a subscription service. Make it clear that some data can't be automatically extracted, and charge a per-page premium for manual extraction. If you don't want to do that work yourself, farm those jobs out to people on mechanical turk.

[reallycurious]

It costs $30/month for about 40 conversions. I didn't indicate that some data can't be extracted. I will add that warning in the dashboard.

The manual labor is interesting but it will cost far more than $30/month for the user, so I'm guessing that's a potential upsell?