At the beginning of 2013, we decided to change the licensing model for all editions of EasyQuery. The smaller option (Basic license) remains the same while the most advanced one (Company license) became about 3 times more expensive.
We also introduced a new policy for software maintenance subscription (support and upgrades): a rather small subscription fee for those who renew regularly and a much bigger price for renewal for those who canceled their subscription and decided to return back in some time.
Fortunately, all these changes didn't affect the sales numbers (in terms of the amount of sold licenses) but essentially increased our revenue.