Charging $55 for the sorceress and $55 for the daimyo in SvsZ Defense 2 was way too much. Now you are charging $70 for the archangel which is the equivalent of the daimyo. Gems costs on mystery boxes increased from 10 gems to 20 gems and prices on all the power ups and power up upgrades have increased too. Increasing the cost of a revive from 5 to 20 is about the only thing I might agree with because I thought 5 gems for a revive was pretty low. A small percentage of people will pay those prices, but a very large percentage won't. In my opinion gems should sell at 100 for $1 and new characters for $5 or less. I wouldn't hesitate at spending money if things were at that level.
I miss the weekly sales that the original SvsZ Defense had. Why don't you bring those back and have a random sale on something every week?