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HP raising Instant Ink subscription pricing significantly
(www.ghacks.net)
This is a most excellent place for technology news and articles.
If it helps even it out for you - I'm quite happy with my Epson lol
I hate to /HailCorporate but it was affordable, takes cheap unbranded ink, and hasn't given me much trouble (I don't use it often, so the ink heads do dry, but a couple of cycles of head cleaning and they're good to go again).