I started using the free version of The Events Calendar, but I wanted the month view and repeating events, so I bought the PRO version for $65.00, with the hope that with a year of online PRO support I'd work out all the bugs.
Much to my surprise, every issue I have posted on their forum (so far 3), was quickly responded to, and the fix clearly explained and easy to manage, even the ones relating to the drop down events menu in my zAlive theme. The calendar is working fine and does everything I want it to do.
Definitely worth the $65.00. Very happy with the product and service.
In case you want to see it in use and see the drop down events menu -