Heroes 5.5 WarGame Edition - Tactical Edition.

The price is calculated as follows: Price = BuildingValue - TempoCost + DiscoveryCost, where: BuildingValue = 4 * Income (for the Capitol branch) TempoCost = 1000 (fixed) DiscoveryCost = 500 * (Number of New Buildings Unlocked by the Building - 1) Explanation: TempoCost = we cannot build multiple buildings in one turn, therefore, when building any building, we spend not only resources but also additionally "spend" tempo on it (which is especially noticeable when building cheap buildings). DiscoveryCost: if a building unlocks several new buildings, this increases its value, as it increases the number of building possibilities. If a building unlocks only 1 new building, then DiscoveryCost = 0 (the number of possibilities before and after construction has not changed). If the building is a dead end (unlocks nothing), then DiscoveryCost = -500 (i.e., the building is slightly cheaper if it is a dead end). Town Hall = Additional income +500, hence BuildingValue = 2000. Price = 2000 - 1000 = 1000 Magistrate = Additional income +1000, hence BuildingValue = 4000. Price = 4000 - 1000 = 3000. Capitol = Additional income +2000, hence BuildingValue = 8000. Price = 8000 - 1000 - 500 (dead end) - 500 (prevents building Capitols in other cities) = 6000. From the point of view of payback, if income-generating buildings are placed on days 1, 3, and 5, then: Town Hall = costs 1000, payback is 2 days, by the time day 3 arrives (construction of the Magistrate), it breaks even. Magistrate = costs 3000, together with the Town Hall, the total payback is 2 days, by the time day 5 arrives (construction of the Capitol), the Town Hall + Magistrate combination breaks even.