It makes sense if you think about it.

Seeing as how Evony boasts having 15 million users this is what they could make monthly.

10.00 per month per user @ 15 million users is 150 million in revenue

15.00 per month per user @ 15 million users is 225 million in revenue

10.00 per month would get 10,000 cents to spend for each 30 days

15.00 per month would get 15,000 cents to spend for each 30 days

In the end users save month and Evony makes a ton more money for having a plan that makes cents (yes I did that on purpose).

Also, the drop rates on medals, crafting ingredients and other items need to be increased dramatically.

If they still want to have a non sub game then they could have a seperate server for those that want to remain as it is now.