Buildings

Barracks to Level 6: 225K stones; 1 day
Barracks to Level 7: 650K stones; 2 days
Barracks to Level 8: 1.75M stones; 3 days
Barracks to Level 9: 3.5M stones; 5 days
Army Post to Level 4: 250K stones; 8 hours
Army Post to Level 5: 600K stones; 20 hours
Army Post to Level 7: 4.8M stones; 4 days
Army Post to Level 8: 12M stones; 7 days
Armory to Level 5: 1.2M stones; [time?]
Armory to Level 6: 2.4M stones; [time?]
Armory to Level 7: 6M stones; [time?]
Alliance Portal to Level 4: 3M stones; 3 days
Alliance Portal to Level 5: 9M stones; 6 days

Cannon to Level 6: 250K coins; 16 hours
Cannon to Level 8: 1M coins; 2 days
Cannon to Level 9: 2M coins; 3 days
Watchtower to Level 6: 440K coins; 18 hours
Watchtower to Level 7: 800K coins; 2 days
Watchtower to Level 8: 1.6M coins; 3 days
Fireball Catapult to Level 4: 1M coins; 2 days
Fireball Catapult to Level 5: 2M coins; 4 days
Fireball Catapult to Level 6: 4M coins; 5 days
Lightning Cannon to Level 2: 800K coins; 1 day
Lightning Cannon to Level 3: 1.6M coins; 2 days
Lightning Cannon to Level 4: 2.8M coins; 3 days
Lightning Cannon to Level 7: 11M coins; 6 days
Flamethrower to Level 2: 225K coins; 1 day
Flamethrower to Level 3: 700K coins; 3 days
Flamethrower to Level 4: 1.2M coins; 5 days
Wizard's Tower to Level 2: 3M coins; 4 days
Ballista to Level 2: 4M coins; 7 days
Royal Hall to Level 7: 2.5M coins; 5 days
Royal Hall to Level 9: 6M coins; 10 days

Troop promotion times
Warrior to Level 4: 1.6M stones; 4 days
Bear to Level 5: 6.3M stones; 14 days
Demolitionist to Level 4: 3.2M stones; 7 days
Assassin to Level 2: 260k stones; 1 day
Summoner to Level 2: 530k stones; 2 days
Airship to Level 2: 530k stones; 2 days
White mage to Level 2: 4.8M stones; 10 days

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