I have purchased original HP ink from Amazon since I had my Photosmart C5280. The number of copies per cartirdge that can be printed has dropped considerably and the last two orders I placed only gave me enough ink for approximately 10 or less copies. The cost of the ink has risen and the volume of ink supplied has decreased to a bare minimum that can be got away with.
Unfortunately I am most disappointed and will be very careful where I purchase these cartridges in future.
Please see if anything can be done so that we are not ripped off!