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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.
Subscription-based hardware business models, or anything that is cloud-based have a strong tendency to do this. They sucker you into buying their hardware with rock bottom prices and reasonable subscription fees and slowly they increase the prices and put more and more features and functionalities behind increasing paywalls.
Never buy anything that you don't fully own after paying for it.