Tip for Warmongers (Disregard THIS Tip if you think RoP Rape is "Unsportsmanlike"Markus5 said:But, as I said, some techs will never get sold. Anybody have ideas or comments about tech buying?

If you don't mind declaring war this turn (or within a few turns), change ALL your laborers to Taxmen....this will give you lots of gpt.....usually enough to pay gpt to an AI Civ for the Tech you want.
Then declare war on them; you get your gpt back!; reset the laborers to their prior work orders! Result: FREE Tech!!
