Why is this sooo expensive??? is there a cheaper version?

Question

Wausau Bright Colored Ruled Filler Paper for 3 Ring Binders #25910, 100 Count 25 Sheets of Each Color Ultra Bright Yellow, Pink, Blue and Orange

Answer 1

The major expense lies in the 3 hole punching, or drilling, on a NON-standard paper.

Cheaper version...Buy the paper unpunched + buy your own 3 hole punch machine (sometimes referred to as a drill) + punch your own holes.