I have the tape in the article. It works fine, just expensive. I made one ruffle dress for a friend. The largest package has 6 yds in it. I probably needed 3 more pkg to finish.
I didn't buy more, just did it the old way - zigzag over a piece of quilting thread and then gather from there. If you were doing just a little, like in the article, it is quick and easy.
Maybe if it became available in larger rolls - like 50 or 100 yards, I would use it again.