As with Ice Cream and coffee to name a few, this company along with other paper companies is practicing deceptive advertising/sells.They are selling 400 sheets of paper as a "REAM" when in the past the ream measured 450 to 600 sheets. "This ream of 500 sheets (20 quires of 25 sheets) is also known as a 'long' ream, and is gradually replacing the old value of 480 sheets, now known as a 'short' ream. Reams of 472 and 516 sheets are still current, but in retail outlets paper is typically sold in reams of 500." unk source! No more shall I pontificate on this subject.