Olive Press

The Olive Press  increase your olive oil  production in the "Burning Sands" kingdom (up to +50% when maxed).  You may build levels 1-3 with wood & stone, while the last two levels cost rubies.

Cost for Olive Press
Level Rubies cost Olive oil production bonus
119,461 wood & 22,242 stone +10%
20 +20%
30 +30%
417,000 +40%
533,000 +50%
Total50,000