Thank you for your comment. I think that my post is almost invisible and there is no many people who understand markets. I am pretty sure that some guy is doing triangular arbitrage right now between our internal market and poloniex. He has at least minimal fess or 0 . This was a reason why I brought this post.
I do trade a lot and I see market manipulation on daily basis. I am not happy when I see similar behavior at steem market as well.