Originally posted by Flynn
"I hope a patch will include some kind of market evaluation, removing this kind of gameplay. "
What really needs to happen is that if you sell a tech to a rival for X, then also sell it to another rival for X/2, your reputation with the first rival needs to drop.
There's no reason for a civ to think they're getting an exclusive right to the technology. They know you can sell it to others. That's logical. But they should expect a market valuation.
The fact that you sell it all at the same time is crucial, though. A civ that buys a technology from you should sell it to anyone they can on the next turn. You should be forced to sell to every one to maximize your dollars.
Basically, the way to improve it is A) make the civs strongly in favor of a "sell to one, sell to all, buy from one, sell to all" strategy. Unless you're in an MPP or Embargo agreement, they should expect that if any other civ has the tech, they'll broker it. B) if you sell to someone else for less after "ripping off" a civ, your reputation should suffer.