Quoted from RobertWinter:I had a very positive experience with Mikonos in 2020. Contacted him via e-mail with what I wanted to purchase and he gave me a price. Shipping took about 6 weeks but that was out of his control and he did provide a tracking number.
I was VERY happy with what I received and would not hesitate to deal with him again.
Hi RobertWinter!
Thanks for your comment! 
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It is clear that if you have been in communication with other fans of the arcade and pinball world for a long time, there can be some bad interactions. The "supposedly" professional stores have them, how is this not going to happen between fans? There is always a color that does not match or something has gone wrong in the transport, there may even be an attempt to scam.
In my case, I receive a lot of requests, and it's normal because I'm a huge collector of arcade and pinball art, and I reject or don't respond to many requests, and that can also be annoying. But, there are also people who get upset because they don't like a price from you or they simply don't like that you have so many pieces of art or a specific piece, simply.
*Surely this has happened to more than one of you, I mean having something that others want and you are upset because other have something that you want. We are human, and it is part of the nature of some of us. 
10 years ago people were very upset because they thought that my skills should be put at the service of the fan for free, since I, like everyone else, loved these hobbies. The problem is that I had already done this, and my artworks and restorations started to be cataloged (and they are still part now) by "professional" arcade and pinball shops. I could point them out, and you might even see my characteristic badly erased watermarks on their thumbnails. 
That ended! My artwork is no longer freely shared, I don't sell files either, I just trade them with other hobbyists who have "their own files" unrestored, as I prefer to restore everything by myself and only trust my work. 
Cheers!