Staples offers a Staples 8.5" x 11" Multipurpose Paper 10-Ream Case for $4.99 via the directions below. Plus, Staples rewards members bag free shipping. (It's free to sign up.) That's $5 under our April mention, the lowest total price we've seen, and $31 under the best price we could find for a similar 10-ream case of paper elsewhere. This acid-free paper is FSC-certified. Rebate offer ends July 18. To get this deal:

1. View the Staples 8.5" x 11" Multipurpose Paper 10-Ream Case for $53.99
2. apply coupon code "23663" to drop it to $48.99
3. redeem this $44 mail-in rebate to yield a final total of $4.99