1 economies of scale in reverse
It's cheaper to buy two one packs than this bundle.
2 Great Price For Efficient Cartridges
This bundle contains two HP 56 black (C6656AN) cartridges used on many common HP DeskJet printers. As I am in graduate school, I use my printer a lot (about 1,000 pages a month of mostly black and white pages.) I typically use a cartridge every three weeks or so, which seems very good to me. I have enabled some ink saving features on the printer, although the quality of the printed pages still seems excellent to me.
I am very impressed with these cartridges, and Amazon's price is the best I have found. One feature that I like is that HP is now putting business reply mail return envelopes for returning old cartridges for recycling. As an aside, on my printer I get a low ink warning long before the printing is visibly degraded, so I tend to print until I can see the ink fading, which may account for me getting more copies per cartridge than others seem to.
I like the HP printer line, and recommend an HP DeskJet with appropriate cartridges for efficient and reasonably priced printing, especially to relatively high volume home users.
