A 10 ream case of 8 1/2" x 11" HP Office Paper drops from $51.99 to $27.99 at Staples.com. Shipping ads $9.95, but if you join their free rewards program, you'll get free shipping and a credit for 5% back on your purchase. This is the best price we could find for one of these cases by $17. Each ream has 500, 8 1/2" x 11" sheets of fast drying, HP printing paper with ColorLok technology that's designed to produce bolder blacks and brighter colors. Sales tax is charged in most states.