How To Sell Local SEO Results

This is my first post in this section of the forum however I appreciate all of the posts and advice that I've had the opportunity to read over the past few months.

I'm looking to see if you can comment on what I'm currently doing and provide me with some feedback or what has worked for you. I tend to be long winded so I apologize for that in advanced

My Story: I tried to word the title correctly because I am selling results. I always believed it is easier to sell a results thats already achieved than one that is not. At least for me as I'm not a big time salesmen and I felt more comfortable approaching someone with results versus selling future results that I'm not entirely sure I could attain. You just never know with SEO.

I'm honest and just took the approach of "I have these websites that rank for these keywords that are your business. Would you like to be the only person listed on the website?" That's been my approach. It's worked and I have done well but I am looking to step things up.

I would show them the traffic stats, the keywords and they could see the websites ranking high in Google often at a top 3 position. A lot of the work was done. I went person to person with that approach until someone agreed to work with me.

I also took this approach because when I started I was really young and I still am so if I had proof I thought it would be easier.

The Future: While I have been doing this I have been working on some high competition and high value keywords. The results are starting to come in now and I am looking to enter into partnerships with business that could really utilize my SEO results.

These are local websites that rank for high profit terms like insurance, investments, high end cars, jewelry, real estate and things like that. The results are already there and the right kind of business could certainly make a fortune off of my SEO Results.

Questions: Is anyone doing similar things? Is there a good approach I can take to get sell my service? I am taking a similar approach like I always have done and not too much has changed but I'm sure I could be doing something better. I'm often dealing with larger business now and sometimes agencies where there are many decision makers. More work but a potentially bigger reward.

For example if I have a keyword ranked for a local car dealership that sells high end cars am I looking to partner with the entire dealership or a smart salesman within that dealership? Which would be the better approach. I am testing various approaches.

How do you sell high end SEO Services in the $5,000 - $10,000 - $15,000 and maybe more month type of services?

Thanks,
Brandon