Seems like a reasonable price for a template. Get the more expensive version if you decide to buy it.
Keep in mind that this app probably doesn't import the scanned documents nor do you want it to. The app should just save the path to the document location. Also, there is no way this app would give you search capabilities of the documents themselves. You have to rely on the attributes you choose for the doc when you save it.
You never elaborated on your requirements so we're assuming that this template would be satisfactory. Production grade applications that give you full search capability would go for tens of thousands of dollars per year so there is a huge difference in functionality as you can imagine.