This deal has ended.
Office Depot has 10-ream boxes of Hammermill Copy Paper on sale for $29.99 through 6/30. For reference, the cheapest box of Office Depot-brand paper sells for $31.99. Buy 4 boxes and you can use $20 off $100 coupon code 80256740 (expires 7/2), which cuts the price of 4 to $99.96, or $24.99 each. The resulting $2.49 per ream is as low as I've seen this. Plus, when you order online, delivery is free so you don't need to lug these home!