There should be no cost, Kuula offers a very good free service for single images, Panoee (as my original post) is a new service that offers tours of multiple images for free. Both allow you to embed the produced results here.
The beauty of Panoee to me, is that we have managed to get on board the develpoers @panoee360 and @leo_panoee who are here to offer support and have also taken on board and more importantly addded features that have come from member suggestions.