Is it true that the cost of expansions raises along with our income (meaning how much money we get from collecting habitats)? I've seen one player ask about it about a month ago and I thought that well, it isn't true... But I knew for sure that my expansion costed 250000 for a while, and then one day, it was 300000 (the same expansion... I hadn't done it yet because I was too lazy to gather enough money)! I was really surprised.
The problem is, right now I'm afraid to evolve my dragons
because I don't want the expansion costs to get higher.. Has anyone else noticed something like this?