More like $0.72 at Walgreens while regular wax packs were still around $0.40. I remember the hobby magazines went nuts over them, but I don't remember any collectors being particularly interested. In later years, I was very disappointed when they went from three images down to two, when the technology had actually advanced to allow 6 or 7 images/frames of motion to be shown.
Once holograms came in, Sportflics was out, and even then, no one really seemed to care about holograms. I always thought those Dennys cards that showed a players entire swing were really cool.