The new patch 1.3.2 fixed some bugs and game balance adjusts (costs). Check the changelog.

Changelog:

• Environmental cost and building cost is the same now (destroy);

• Fixed bug mayor trait environmentalist;

• Change max water cost (200);

• Change min water cost (1);

• Change max destroy cost (200);

• Change min destroy cost (1);

• Change max agricultural ground cost (200);

• Change min agricultural ground cost (1);

• Change max erosion cost (200);

• Change min erosion cost (1);

• Change max tree cost (200);

• Change min tree cost (1);