The fabric really is VERY cool. We carry it too; the butterflies are nearly gone and Hoffman is not reprinting them. The space and sea creatures were reprinted, so we just got another bolt of each this week. Our price is $9.25 / yard.
http://www.favoritefabric.com/cgi/co...y_hoffman.html
And... we put on the 3D glasses and took a look at our other fabrics, to see if there was anything else that was secretly 3D. What we found was that anything with a cool color background (blue/turquoise/green) with warmer-colored objects (yellow-orange-red), the warm tones just seemed to levitate up and away from the background of the fabric. Red the most, orange and yellow a little less. I think the most interesting effect was the puzzle pieces fabric by Timeless Treasures. The background was black, the blue, green, and cyan pieces "stayed down", and the yellow and red ones "jumped up". Unexpected (and fun)!