@Tactician
I merged your thread because we had already one and no need to repeat the same things.
To make the long story short
The excuse for those changes in negotiations was not to permit upselling- downselling between accounts of the same owner.
But because of that, it was a good reason to increase the profit of nordeus because all we can see that the auctions have crazy prices now, for every player and every day of the season.
One condition (not to permit a second sale during one season or just forever ) was enough to stop it .
Now negotiations are used only for some tricksters or those who are staying season.