HP Home & Home Office Store takes 20% off when you spend $60 or more on HP Original ink cartridges via coupon code "STOCKUP14". Or get $20 off when you purchase two of the same HP Original toner cartridges via code "BACK2BIZ14". (These coupons don't stack.) Even better, all orders qualify for free shipping. Combined that's tied with our November mention as the best discount we've seen on these printer supplies since the summer, when we saw an offer for 50% off a third cartridge plus $10 off $50. Deal ends January 25.