There have been some discussion about micro-managing RA's, and if it is worth it or not.
Today I played a game, where I tried to abuse this to the max.
It requires a certain amount of resources, timing and partially luck.
I signed 3 research pacts at the same turn, and controlled the tech tree in such a way that I got Civil Service, Education and chivalry all at the same time from RA.
The screenshots will tell how I did it
Today I played a game, where I tried to abuse this to the max.
It requires a certain amount of resources, timing and partially luck.
I signed 3 research pacts at the same turn, and controlled the tech tree in such a way that I got Civil Service, Education and chivalry all at the same time from RA.
The screenshots will tell how I did it

would be worth paying
for early on if you could choose the tech the agreement applied to. I don't think it would make sense to bother with the agreements if they provided less. The median tech cost of all techs currently researched by a civ would probably be a good starting point; that will scale over time, but not excessively so.