Part of this is that is just the nature of most games. The new things always take more that the original items whether it is farms and land upgrades in Farm Town or islands and castle upgrades in My Singing Monsters. I don't think I've played a game yet where things didn't get more expensive or where it takes more XP to level up. When I first started playing FT I thought that I would never be able to save up enough coins to buy the mansion that cost a MILLION coins. Now a million is spare change.
