AI to AI trade rate (AI Bonuses)
Determines the percentage multiplier used in AI – AI trade sessions on the selected difficulty level. This value is a percentage (acceptable values range from 100% to 1000%) which is multiplied by the total value (in gold) of the initiating civ’s offerings, which is used by the "other" AI civ to determine whether a deal is acceptable or not. For example, with a rate of 120, an AI civ offering 100 gold to another AI civ for something would actually be worth 120 gold to the other AI civ.
This rate directly affects the frequency and aggressiveness with which AI civs trade amongst themselves.