HP 21 Black Retail Twinpack
Normal Price:$32.99
Our Price:$24.04
Availability:Usually ships in 1-2 business days
... For more information or Buy from Amazon.com ...
Manufacturer: Hewlett Packard
Model: C9508FN#140
Binding: Electronics
Publisher: Hewlett Packard
Label: Hewlett Packard
Special Features: nv:Product Type^Cartridge|Print Technology^Inkjet|Color^Black
Features for HP 21 Black Retail Twinpack:
- Depend on genuine HP ink for high-quality, long-lasting results
- Maximize your ink efficiency - get fast results and superior fade resistance while using less ink with HP's Vivera inks
- Stay on top of ink replacement with HP SureSupply - receive alerts when a cartridge is low, monitor its remaining life, and enjoy easy online ordering or check stock and prices at nearby stores
- For use with - HP All-in-One Machines Officejet 4315, Deskjet F380, PSC 1410 Series, HP Fax Machines Fax 1250, HP Inkjet Printers Deskjet 3910, Deskjet 3940 Series, Deskjet 3915, Deskjet 3930 Series, Deskjet D2330, Deskjet D2360
Small Picture
Medium Picture
Customer Reviews
good---but somewhat overpriced (three and one-half stars) 
2008-06-28
The HP 21 inkjet cartridge is very light, easy to install and allows the printer to print out very good quality, durable black ink on the page. It stores for about a year after you buy it so if you want to stock up for your office or personal printing needs that's great! (It even comes with an expiration date!) HP also packs it well so that it is difficult for the cartridge to become damaged during transit.
One thing that I didn't like, however, is that the ink can go quickly. If you print a lot, you might even need to replace this cartridge every ten days or so. My needs are about 10 pages per week and I have to change the cartridge roughly every six to seven weeks. That's not good; although to be fair to this HP ink cartridge I am printing graphics.
As of the time that I am writing this, why don't we get a better discount for buying two cartridges? I notice the price to buy two is just slightly less than twice the cost of one of these HP 21 ink cartridges--but buying two should be cheaper still since you're buying two and not just one at a time; instead HP wants their customers to pay twice without giving them any discount or "price improvement." You might save a little over a dollar by buying this twinpack; but that's not much. There's just no discount nor is there any financial incentive to buy more than one at a time--and, as one reviewer notes, this is a disappointment.
Three and one-half stars for being great ink in easy to manage and install cartridges. It loses one and one-half stars for not lasting longer AND not giving customers a discount for buying more than one cartridge at a time.
Why do 2 cost more than twice as much as 1? 
2008-03-04
Why would anyone want to buy a twin pack, which is supposed to save money by "buying in volume", when it is MORE than double the price of a single cartridge? Amazon appears to need some help with their math on this one. Hopefully they'll fix this and my review will become unneeded. Until then, don't assume that a two pack is automatically a better deal.
HP 21 Black Retail Twinpack 
2008-01-08
A good value for this high quality HP product. What more can I say, ...always reliable, great results and fast printing. HP 21 Black Retail Twinpack
Satisfactory quality and price. 2007-11-21
Good quality for the price. I have never had any problem with this cartridge. There are other cheaper ones out there, but I felt their quality of cartridge and ink aren't as good as this one.
Dependable, but the ink sure doesn't seem to last very long 2007-10-22
I love HP ink, but it is very expensive and it doesn't seem to last very long.
Review of the Ink, 2007-10-22
Get crisp, sharp results in color and black and white / Yields up to 150 pages per cartridge / Two 5 ml cartridges ink volume
Good Deal 2007-09-09
If you really do not want to throw out your printer out every time it runs out of ink you cannot go wrong with this deal. The twin pack is a hair more than most dealers single packs, you have spare on hand, and you order half as often. Now if they had one for the color too, that would be perfect.
Bad Service, Bad Service 2007-07-27
I never received the item, was arbitrarily given an incorrect refund, even though I requested the item by email. Any attempts to contact the seller have been ignored. I will not buy another item from Amazon, because of this shoddy, unprofessional treatment. I will share this experience anytime Amazon comes up in discussion.
Robert Toole
2 Is Better Than 1 2007-07-21
It seems like everyday, we are trting to find the best in inkjet cartridges these days. Although some are cheaper than others, like store brands, it is the quality that makes the difference. This 2 pack of HP 21 Black inkjet cartridges is easy to setup for your printer, and connects like a snap. These cartidges works very well with my printer. They are also compatable with the Deskjet 3900 series and other HP printers. I really recommend this 2 pack because it saves in money and in value for all your everyday printing needs.
Price: B+
Quality: B+
Overall: B+
