Quote Originally Posted by mikebarger View Post
...$9.00 times 6 boxes a year equals $54.00. $54.00 times five years equals $270 USD. Still not a lot, but some principle is involved...
Not following the math. xe.com converts the 1.9 Euro Mirko quoted to $2.55. That would be the savings per 100 sheets if it were packaged in a 100-sheet box rather than 4 25-sheet envelopes. How many hundred sheets are you saying you'd use per year / five years? What would the price difference be?

Other than "frugality," what principle is involved?