CompAndSave cuts up to 99% off a selection of ink cartridges, dropping prices to 99 cents. (Use the coupon code listed under each product to receive the discount.) Shipping adds a flat rate of $3.99 or get free shipping on orders of $50 or more. Deal ends December 7. A couple of best bets:

• Hewlett Packard CN684WN / CB321WN Compatible Black Ink Cartridge for 99 cents via coupon "564CS" (pictured, low by $4)
• Lexmark 14N1614 Compatible Black Ink Cartridge for 99 cents via coupon "150CS" (low by $2)