Thanks @Tony1954.
I don't see any possibility to get money back.
As a producer of Stands for high-end equipment, I have noticed by the way, that one specific aspect comes out of buying just from resellers with a long history and verifiable reviews. This market become more and more too much exclusive and prices are going more and more crazy. This circle is self-referential and no one is allowed to access it. I hope that sometimes some new and young shops can open and with the right willingness to enter this world can create a little bit of sane competition.
Even though the high-end passion seems to have days numbered because new generations have no money for this expensive passion, neither they are interested in it.
This doesn't mean that you have to buy everywhere and be cautious.
After everything happened it's easy even for me to recognize I made a mistake but when you are dealing with a seller, not everything is clear and your doubts mixed with the desire to have found a super deal can lead you to that.
I hope that this post can be useful for someone else and that this stupid guy will not claim other victims. At least my money will make sense.
But this is just my sight and I didn't want to hurt anyone.