Well... I will give "friendly advice" and my 0.02.
1. I am glad I did not have to be a member for 1 year to be able to sell on this forum. I listed and sold 2 EM machines this past month where both classified ads had a forum link, and sale prices were disclosed. I actually did not sell them because of the listing on this site, and so I did not benefit from the classified, but I think the community benefitted by the now archived info and associated pictures.
2. I think more classifieds should have links to forum discussions. I personally think the discussion should be allowed to continue after the item sells if that is of value, and I hope if this item sells, the seller will disclose the details of that sale, as I did.
3. I think some of these comments are from members who are over-reacting.
4. People who flip machines and sell machines the way you are doing it benefit from the profit, and from that, you win financially compared to selling it for the price you paid to order a machine in demand. However, you said you are new to this fantastic hobby, and list only 1 game in your collection but have a wish list of 28 games going back to Lucky Strike from 1965. If you are serious about a long term interest in being a collector rather than only a flipper, and will benefit from getting help when needed, I think you lose by a thread like this more than you will win by the profit you will likely get on this sale. People here will not want to help you if you buy 2 in-demand machines that takes a spot from someone else so you can then flip it for profit (even a small profit).
I very much value the help I get when I seek it. For example, I got to visit 2 local members and play their machines and 1 of them is helping me with some circuit board and other issues. I needed a Rudy bracket for my Funhouse which is as rare as hens teeth, and someone sent me a PM and sold me a new one at a very modest price. I do not think you will have it both ways. If I were you, I would value the long term goodwill over the profit on this. But I am not you. Just my 0.02.