I'd like to ensure that this thread is linked to this thread discussing what the heck to do if you decide later to raise prices:
https://vborg.vbsupport.ru/showthread.php?t=73419
If you raise prices after installing the reoccurring hack, you'll have problems with everyone's subscription who subscribed BEFORE the price raise: because their auto subscription payments no longer match the new price, their subscriptions will fail, requiring them to re-subscribe.
In that linked thread I describe a down and dirty hack to prevent some of the problems.