free vs purchased version

What do you see as the main differences? I see a free way to use the theme on WordPress. the live preview looks nothing like the demo. there is also a purchase option directly from the site builders. has anyone purchased it and recommends it? I have Relia currently and there is zero support and some major issues with the blog area. I love it so much, but Ican’t risk going so far into building and then still needing to change so I’m looking into this fashion designer theme as a strange option to change now.