First of all - we all enjoyed visiting the Hotel de Glace. It's undeniably beautiful, and the construction is amazing! I would recommend doing what we did - arrive in the late afternoon to catch some of the sun shining through the ice, and stay until twilight so to appreciate the lovely lighting. The artistry in the rooms is quite remarkable.
On the other hand - to charge over 50 dollars for a family to just walk around the place is excessive. Admission at half that cost would have been more reasonable for what one gets. I don't regret going, but also can't shake that the admission rates are a joke pulled on all us tourists!