Amazon has the 200-Count 8 1/2" x 11" Sheet Rite In The Rain Weatherproof Copier Paper Pack (20# Gray) for $19 with free shipping on $35+ or with Prime (extra 5% off for 5+ subscribe and save orders). Doesn't turn to mush when wet and will repel water, sweat, grease, mud, will survive the accidental laundry mishap and more.