The Royal Cannon was the one thing that we could upgrade for free. Now to get it to the max it costs 500 etchings ( which are expensive ) and if you don't do it, you see that little nag-flag over it all the time. This game is already overpriced to play, and this increase in cost just pushed me over the edge. Once my rubies are gone, if that cost hasn't been clawed back, I won't want to look at that stupid nag-flag anymore, so I won't be spending another dime or playing nearly as often — if at all.