AnotherGame is a mod for ToE 3.1.

Yes, it was surprising. Apparently, they are introducing absurd restrictions even in tournaments. You'd think that winning a game is possible thanks to a tower, by forcing the opponent to attack with fewer forces and without scouting.

What are the prices on the market? The cost of 1 resource is 100 gold, and a rare resource is 200 gold. This is a perfectly natural rate.

However, if you look at it through the lens of the exorbitant market prices, where only 1 rare resource is offered for 5,000 gold, your approach is appropriate. From a market perspective - because no one will use this method to inject resources that are not in short supply (I practically never exchanged gold for resources, only surplus resources).