Cost Slots Castles (with and without discount 25%).
Cost OPEN! slots.
1ª 0 Pearls - 0 Pearls
2ª 75.000 Pearls - 56.250 Pearls
3ª 150.000 Pearls - 112.500 Pearls
4ª 225.000 Pearls - 168.750 Pearls
5ª 300.000 Pearls - 225.000 Pearls
6ª 375.000 Pearls - 281.250 Pearls
7ª 450.000 Pearls - 337.500 Pearls
8ª 450.000 Pearls - 337.500 Pearls
9ª 450.000 Pearls - 337.500 Pearls
=
1.856.250 (for OPEN! 9 SLOTS(Forecastle,Topcastle,Aftcastle)
Cost OPEN! slots Voodoo.
1ª 0 Pearls - 0 Pearls
2ª 75.000 Pearls - 56.250 Pearls
3ª 150.000 Pearls - 112.500 Pearls
=168.750 (for OPEN! 3 SLOTS( at VOODOO!)
Cost UPGRADE! slots.
2º 20.000 Pearls - 15.000 Pearls
3º 40.000 Pearls - 30.000 Pearls
4º 60.000 Pearls - 45.000 Pearls
5º 80.000 Pearls - 60.000 Pearls
6º 100.000 Pearls - 75.000 Pearls
=
225.000(1x SLOT at level 6) and 2.700.000(12x SLOTS at level 6)
TOTAL: ONLY OPEN ALL SLOTS & UPGRADE THEM TO (LEVEL 6) = 4.725.000(ON CASTLE DAYS)
Forecastle
Centerboard
Level 1 15.000 Pearls - 11.250 Pearls
Level 2 25.000 Pearls - 18.750 Pearls
Level 3 40.000 Pearls - 30.000 Pearls
Level 4 65.000 Pearls - 48.750 Pearls
Level 5 100.000 Pearls - 75.000 Pearls
Level 6 150.000 Pearls - 112.500 Pearls
Adamantine hull
Level 1 25.000 Pearls - 18.750 Pearls
Level 2 35.000 Pearls - 26.250 Pearls
Level 3 55.000 Pearls - 41.250 Pearls
Level 4 85.000 Pearls - 63.750 Pearls
Level 5 125.000 Pearls - 93.750 Pearls
Level 6 190.000 Pearls - 142.500 Pearls
Cannon loader
Level 1 25.000 Pearls - 18.750 Pearls
Level 2 35.000 Pearls - 26.250 Pearls
Level 3 55.000 Pearls - 41.250 Pearls
Level 4 85.000 Pearls - 63.750 Pearls
Level 5 125.000 Pearls - 93.750 Pearls
Level 6 190.000 Pearls - 142.500 Pearls
Reinforced hull
Level 1 25.000 Pearls - 18.750 Pearls
Level 2 35.000 Pearls - 26.250 Pearls
Level 3 55.000 Pearls - 41.250 Pearls
Level 4 85.000 Pearls - 63.750 Pearls
Level 5 125.000 Pearls - 93.750 Pearls
Level 6 190.000 Pearls - 142.500 Pearls
Rowers
Level 1 1.000 Pearls - 750 Pearls
Level 2 12.500 Pearls - 9.375 Pearls
Level 3 25.000 Pearls - 18.750 Pearls
Level 4 45.000 Pearls - 33.750 Pearls
Level 5 75.000 Pearls - 56.250 Pearls
Level 6 130.000 Pearls - 97.500 Pearls
Topcastle
Manual of naval tactics
Level 1 15.000 Pearls - 11.250 Pearls
Level 2 25.000 Pearls - 18.750 Pearls
Level 3 40.000 Pearls - 30.000 Pearls
Level 4 65.000 Pearls - 48.750 Pearls
Level 5 100.000 Pearls - 75.000 Pearls
Level 6 150.000 Pearls - 112.500 Pearls
Astrolabe
Level 1 25.000 Pearls - 18.750 Pearls
Level 2 35.000 Pearls - 26.250 Pearls
Level 3 55.000 Pearls - 41.250 Pearls
Level 4 85.000 Pearls - 63.750 Pearls
Level 5 125.000 Pearls - 93.750 Pearls
Level 6 190.000 Pearls - 142.500 Pearls
Gunpowder
Level 1 25.000 Pearls - 18.750 Pearls
Level 2 35.000 Pearls - 26.250 Pearls
Level 3 55.000 Pearls - 41.250 Pearls
Level 4 85.000 Pearls - 63.750 Pearls
Level 5 125.000 Pearls - 93.750 Pearls
Level 6 190.000 Pearls - 142.500 Pearls
Carpentry expertise
Level 1 15.000 Pearls - 11.250 Pearls
Level 2 25.000 Pearls - 18.750 Pearls
Level 3 40.000 Pearls - 30.000 Pearls
Level 4 65.000 Pearls - 48.750 Pearls
Level 5 100.000 Pearls - 75.000 Pearls
Level 6 150.000 Pearls - 112.500 Pearls
Aftcastle
Telescope
Level 1 15.000 Pearls - 11.250 Pearls
Level 2 25.000 Pearls - 18.750 Pearls
Level 3 40.000 Pearls - 30.000 Pearls
Level 4 65.000 Pearls - 48.750 Pearls
Level 5 100.000 Pearls - 75.000 Pearls
Level 6 150.000 Pearls - 112.500 Pearls
Iron harpoons
Level 1 15.000 Pearls - 11.250 Pearls
Level 2 25.000 Pearls - 18.750 Pearls
Level 3 40.000 Pearls - 30.000 Pearls
Level 4 65.000 Pearls - 48.750 Pearls
Level 5 100.000 Pearls - 75.000 Pearls
Level 6 150.000 Pearls - 112.500 Pearls
Harpoon loader
Level 1 15.000 Pearls - 11.250 Pearls
Level 2 25.000 Pearls - 18.750 Pearls
Level 3 40.000 Pearls - 30.000 Pearls
Level 4 65.000 Pearls - 48.750 Pearls
Level 5 100.000 Pearls - 75.000 Pearls
Level 6 150.000 Pearls - 112.500 Pearls
Sternpost
Level 1 25.000 Pearls - 18.750 Pearls
Level 2 35.000 Pearls - 26.250 Pearls
Level 3 55.000 Pearls - 41.250 Pearls
Level 4 85.000 Pearls - 63.750 Pearls
Level 5 125.000 Pearls - 93.750 Pearls
Level 6 190.000 Pearls - 142.500 Pearls
Cannon storage
Level 1 25.000 Pearls - 18.750 Pearls
Level 2 35.000 Pearls - 26.250 Pearls
Level 3 55.000 Pearls - 41.250 Pearls
Level 4 85.000 Pearls - 63.750 Pearls
Level 5 125.000 Pearls - 93.750 Pearls
Level 6 190.000 Pearls - 142.500 Pearls
Voodoo Castle
Voodoo Bundeling
Level 1 15.000 Pearls - 11.250 Pearls
Level 2 25.000 Pearls - 18.750 Pearls
Level 3 40.000 Pearls - 30.000 Pearls
Level 4 65.000 Pearls - 48.750 Pearls
Level 5 100.000 Pearls - 75.000 Pearls
Level 6 150.000 Pearls - 112.500 Pearls
Amulet pedestal
Level 1 25.000 Pearls - 18.750 Pearls
Level 2 35.000 Pearls - 26.250 Pearls
Level 3 55.000 Pearls - 41.250 Pearls
Level 4 85.000 Pearls - 63.750 Pearls
Level 5 125.000 Pearls - 93.750 Pearls
Level 6 190.000 Pearls - 142.500 Pearls
Voodoo Mirage
Level 1 25.000 Pearls - 18.750 Pearls
Level 2 35.000 Pearls - 26.250 Pearls
Level 3 55.000 Pearls - 41.250 Pearls
Level 4 85.000 Pearls - 63.750 Pearls
Level 5 125.000 Pearls - 93.750 Pearls
Level 6 190.000 Pearls - 142.500 Pearls
Soul Eater Ritual
Level 1 25.000 Pearls - 18.750 Pearls
Level 2 35.000 Pearls - 26.250 Pearls
Level 3 55.000 Pearls - 41.250 Pearls
Level 4 85.000 Pearls - 63.750 Pearls
Level 5 125.000 Pearls - 93.750 Pearls
Level 6 190.000 Pearls - 142.500 Pearls
Fortified Amulet
Level 1 15.000 Pearls - 11.250 Pearls
Level 2 25.000 Pearls - 18.750 Pearls
Level 3 40.000 Pearls - 30.000 Pearls
Level 4 65.000 Pearls - 48.750 Pearls
Level 5 100.000 Pearls - 75.000 Pearls
Level 6 150.000 Pearls - 112.500 Pearls
Unleashed powers
Level 1 15.000 Pearls - 11.250 Pearls
Level 2 25.000 Pearls - 18.750 Pearls
Level 3 40.000 Pearls - 30.000 Pearls
Level 4 65.000 Pearls - 48.750 Pearls
Level 5 100.000 Pearls - 75.000 Pearls
Level 6 150.000 Pearls - 112.500 Pearls
Sorry but I don't understand this 2:
Voodooguy(Black Market Buff) - - - > 10%(never saw it and what 10%??? 10% more then you're actual VP or what?..also exact name of it will be useful)
Hidden Deck(Black Market Item) - - - > 20.000 hp(never saw it,maybe someone have the exact name for it?)
Beam gives 900 HP! you can have a total of 150 Beams on you're ship.
120(on 10x upgraded elite decks with this new update that allow you to add 2 more beams)
30(on Mojo and 2x Payment decks)
Total 150 x 900 =135000
Link:

Beams now give more HP – the pearl beams now give 900 HP and the gold beams now give 225 HP.
You did not add:
The key features of the Voodoo cannon:
Reload time: 7 seconds
Hit chance: 75%(thats the probability of you're cannons to hit the target)
Range: 30
Increased damage bonus with voodoo priests
20% increased critical hit probability
So...how do you know that all you're cannons will hit the target? its a 75% chance not 100%...