Trading techs??

[Dilly]

Hey guys,

Im trying to play at a higher level than I normally do and am having difficulties trading techs. I know that at the higher levels, it is almost impossible to stay ahead of the tech race by researching alone, but my question is what really determines whether a civ will trade you a tech or not? On my foreign affairs screen I always see that the civs are WILLING to trade techs, but when I ask them for what they want for it, they are never willing to give anything even if I have several techs they don't have. Is there an internal rating of some sort that gives each tech a value or is it in the total beakers that it requirse?

Thanks!

 

[cabert]

it's beakers value + some modifiers i don't know including :
- military tech or not
- tech giving access to a wonder that is not built yet
- the AIs relations to you

also don't expect to get a fair deal from an AI

 

[ZB2]

some techs have a power rating, which does move you up on that score board. trade them and AI will like you, and say 'CHA CHING' for you course.