I printed this out single-sided on lighter card stock as it's all I had, but still worked out great. I'm using this to store Luck coins during the game, thanks very much for improving our table!
A fun prop to have. Not essential, but fun.
One thing I do not recommend is doing what I did: create all your treasure bundles and have the chests where players can see them. If there is even one left, they'll scour every room because they think they missed something. It LOOKS and SOUNDS cool, but it's just a drag.