Easily sell this for $499 per month as an add-on.
If you work with a niche that has to deal with paperwork on a regular basis (like home services with their permits, lawyers with court filings, CPA's with tax docs, etc etc etc.) this is such a huge time saver you can easily it for $499. The best part is? You can set it up in like 5 minutes.
Is this sauce or what?