Unit Cost

[RERomine]

I can answer part of this. Experience does impact the cost of the weapon system. The more experienced the crew is, the more the weapon system will cost. The reverse is true as well.

As for just the hardware, I'm not sure. A rarity factor might be incorporated into the code somewhere for standard types of equipment. Country A has 1000 tanks of a certain type, while country B has only 20. Being rare, one might conclude that country B would have to pay more. This would be more specific to the OOB for the various countries. There is a rarity value used, but by the AI when determining it's force composition and not adjusting unit cost.