After being stuck at first base on something quite simple, it's now looking much more promising.
Once you get the hang of how you are supposed to do things, it is quite logical and easy to use.
There are things I will need to do which at the moment are not immediately visible - this may mean getting the purchased version. If this is the case, then it should become a very useful plugin.
I have been able to fit it into my theme and change CSS elements so that the e-commerce pages styling is consistent.
As above I think there should be clearer documentation on some simple processes. Will report back when i've gone further.