EXREGEN
EXAMPLE CLAN ROOM HIT POINT/MANA REGENERATION:
All rooms start at 100% regeneration (that is to say, normal speed). For this
example we will increase a normal room (100%) to a bonus of +10% mana
regeneration (or 110%):
Cost for hit point/mana regeneration is 5(a+(a+1)...+b),
where a = (Current point purchased - 100), b = (Desired point - 100)
Thus, to go from 100% mana regeneration to 110%:
Current point purchased = 101, Desired point = 110,
a = 101 - 100 = 1, b = 110 - 100 = 10
Therefore,
price = 5*(1+2+3+4+5+6+7+8+9+10) = 5*55 = 275 diamonds