I regret to say I had difficulty following your disquisition, Qwerty. Perhaps the remarks on the side were just a bit too numerous, and the arrangement of paragraphs left something to wish for.
I understand you want to sell your workers. As has been common knowledge since Civ first came out, the AI greatly undervalues workers in trade (if I want to buy a woker in a city, it 's 80 gold on the first turn, or 36 if there is one shield produced already, but the AI only asks 30 gold or so*) but this works both ways: they will
sell them at rockbottom prices, but they will never
pay much for them either.
What do you mean by "trading workers usually brings the relationship down at least 2-3 steps"? From annoyed to polite to gracious?
From what I 've been told, disbanding foreign workers is considered almost an act of war, certainly an act of murder. I 've never seen the AI disbanding a worker.
I don't know how they know, but if I disband a Persian worker and then meet with Xerxes, he often is less friendly than he was before, even in same turn.
*This has been changed in PTW, but it still is not level.