I find myself writing more reviews for Staples lately. I'm not interested in spending $50 to get 10% off anything. My reviews are because I found a good product and feel I need to tell somebody to keep that product around. Supply and demand. This is a heavier paper then I'm used to using. But t never really tried a heavier paper for two sided book files. A helper at Staples told me to try it and It's perfect. it's also $8 cheaper then another store brand at a lighter weight. Try it for yourself.