In our household we use a considerable amount of paper. Staples deal on paper was the best-I even informed a co-worker who took advantage of the deal. Unbeatable price.
I buy it by the case at the beginning of the school year because just about every class that my kids have requires it. If there are any reams left over I will use it at home and I have reams left just in case the schools may need a ream here or there.