My experience on Mr. Pinball sums up to the following:
There are legit sellers on the site.
They usually have a legit number on the ad.(I called one ad where the location was 20 miles north of me and had a colorado number).
If they are legit, the prices are waaaay over priced.

The best one I personally had was stringing a guy along for almost 10 days while he waited for me to go get walmart gift cards to send him. We texted almost every day. Told him I had the gift cards. He said great and wanted me to send them. I told him i was in the area and can pick it up and give him the cards. Never replied.

This was sent to me this morning. He jokingly asked if stern made addams family. What I found even more entertaining was the tz ad at the bottom.

Screenshot_20191004-104908_Chrome (resized).jpg

I looked it up also.