Monthly or One Time Cleanup options for ORM (7878's Method)

I have recently taken up adding ORM in addition to my web design business. I've been running ORM for the past few weeks, learning many things along the way. I have gone balls deep and into this journey and fully implemented a website, business cards, logo, embroidered shirts, etc. I have mailed out 48 letters on the first two mailings, with many annotations and lots of information, including Google keyword planner data for common keywords (for business searches), area demographics, and other analysis, etc. I am very thorough. I already have 3 clients with 6 month contacts, whom I acquired through my first rounds of mailings (48 letters).

I have a question though: When reading 7878's original letter, it appeared he offered a "one time clean up" service or a monthly strategy. I am already employing the monthly ORM and it's working fine with my 3 clients. However, I am curious as to what kind of service could offered as a one-time strategy? And if so, how much to charge for the service.

Any ideas or pointers would be very appreciated. I have torn through BHW advanced search for the past week looking for something useful but haven't found it yet. Thx.