However, once you recognize that there is no universally accepted definition of 'fair', Inno's limits should make clear sense to you. That is a choice for every guild to make. Some guilds have adopted 2 for 1, others use a trade calculator that attempts to better equalize the costs of production. There is nothing intrinsically fair or unfair about that ratio. If my entire guild has agreed on 2 for 1 across a single age, it means I have no reason to hold out for a better deal, and no reason to try and profit by offering a less favorable deal. The reason for standing trade ratios is not to promote 'fair' trade, but rather orderly trade. That could be 10 dye for 5 plankton, or it could be 10 dye for 10 plankton, or it could be 5 dye for 10 plankton. 'Fair' is what a willing offeror and a willing buyer are willing to accept.

The fact that you reference a 'fair trade calculator' and that you belong to a 'fair trade guild' doesn't alter that basic reality.

The real issue with your proposal is that it rests on a fundamentally flawed premise, namely that there is some objectively 'fair' ratio for trading.

World trade fair forge of empires