This is the first question you had to ask yourself.
I was supposed to use it on hikashop products, and there is a files to replace in the hikashop views. Before buying this plugin I've asked on the forum about some details, but I find the replies stay nebulous even if the support propose to install it directly on your backend.
So I've try it alone, it's not easy to set, I've encountered some bugs with other famous plugins. So maybe it's a good plugin for a simple zoom but not to integrate it in Hikashop.
As I don't want to let someone doing it instead of me, in fact I don't use it, I prefer to know how it runs in case of trouble.
I think 15$ is really to expensive for a simple zoom (almost if you compare it as great things like Maximenu or Falang), and the commercial process which is "I can do it for you" is not really fair.
In fact I've lost 15$ and don't use any zoom...