I tend to forget one at home and one at the office. So I keep one in my briefcase just to be sure. I accumulated the other 2 over months. Trust me, spending $100 on a writing utensil pains me a little, but not so much it precludes doing what it takes to get the work done.
You could have lied and said you actually use two at once. I had a professor that could do that with chalk once. (His lectures were to information what costco is to groceries.)
