If you have a paper cutter, you might want to consider buying a box of 8x10 paper. Two 5x7 sheets can be cut from each 8x10 sheet with a little bit left over for test strips. You'll need test strips. It might even work out to be a little less expensive. Freestyle has a 250 sheet box of 8x10 for $58 that will yield 500 sheets of 5x7 with another 500 test strips of 1x5 inches.