From Staples 4/10 ad
Recycle ANY cartridge and get $5 back in Staples Rewards when you spend $50
that day on HP ink.
Valid through 4/16/11. Spend $50 on HP ink in one transaction and earn $5
back in Staples Rewards per ink cartridge recycled on the same day. Standard
$2 back will be excluded for recycled cartridges earning $5 back.