This patch makes economic technologies more affordable by keeping the first level (village phase) at 200 wood + 100 metal, but reducing the second level (town phase) to 300 wood + 150 metal and the third level (city phase) to 400 wood + 200 metal, effectively establishing a 2:3:4 cost ratio, instead of 1:2:3.
As a consequence, the grand total is 2800 wood + 1800 metal, instead of 4500 wood + 2400 metal.
A [[ https://wildfiregames.com/forum/topic/37202-phase-eco-techs-cost-and-collection-rates/ | relevant forum thread ]].