I wanted to buy Legacy of the Void, i already own Heart of the Swarm. However at checkout it charges me 30 euros. On top there is a notification that there is a reduced price because i already own Heart of the Swarm but i cant see what that discount is… what is the price of only Legacy of the Void?
Base price is 39.99 euros for HoTS, LoTV and Nova Covert Ops.
Nova Covert Ops is 14.99 euros, so price for HoTS+LoTV would be around 25 euros.
This means around 12.5 euros per campaign.
But if you count the free co-op commanders and other advantages given with the bundle as actually having a price, and the price you observed, then maybe the campaigns are really 9.99 euros, and the “free” stuff are worth 5.02 euros.
That is only a theory though, could be more complicated/twisted than that.