There is definitly no support if you'll get stuck in trouble! No support, no response!

If you edit the description section by adding a CR+LF (Key "Enter" on Windows, Firefox), you never can open jCarousel block again in edit mode! You have to delete it and start from the scratch.

Lacks polish and has issues with sign in. I have one site where it does not load it's CSS when a user isn't logged in and one where the slides won't show at all, again only when no user is logged in.