"Barry, if you store chips, in the cardboard flips, in a PVC-free 20 per page sheet, it shouldn't warp, or get damaged over time..right?"

I can only tell you my experiences and they were in boxes. Before boxes I had my chips in 30 per page in binders, but that had there problems also. The books were heavy and the bottom of the pages would curl in if you stood them upright. I still keep my roulettes in binders for now.

Barry