This is real crap that shouldn't belong here. It's not fully functional and does not -at all- give any of the many features listed on the WordPress plugin pages.
It's hard to choose a good calendar plugin using the search function as it is. When i finally do choose, it's really upsetting to have wasted my time downloading and uploading a not fully functional plugin. Effectively denying my ability to find a free fully functional plugin.
I do believe there is a market for it, and sure it can be worth the money for a great few. But don't (talking to: Booking Calender) mix yourself in with GLP licensed plugins. It's not advertising space (since you are not paying for it!) it's space for plugins.
So go before some Japanese PHP warriors make you :)